module Cisco-IOS-XR-um-access-list-datatypes {

    yang-version 1;

    namespace
      "http://cisco.com/ns/yang/Cisco-IOS-XR-um-access-list-datatypes";

    prefix um-access-list-datatypes;

    import cisco-semver {
      prefix semver;
    }

    organization "Cisco Systems, Inc.";

    contact
      "
Cisco Systems, Inc.
Customer Service

Postal: 170 W Tasman Drive
San Jose, CA 95134

Tel: +1 1800 553-NETS

E-mail: cs-yang@cisco.com
";

    description
      "
This module contains a collection of IOS-XR YANG model derived from CLI.

Copyright (c) 2013-2020 by Cisco Systems, Inc.
All rights reserved.
";

    revision "2019-06-10" {
      description
        "Establish semantic version baseline.";
    }

    revision "2019-04-01" {
      description "Initial version";
    }

    semver:module-version "2.0.0";

    typedef ipv4-protocol {
      type union {
        type uint8 {
          range "0..255";
        }
        type enumeration {
          enum "ahp" {
            value 51;
            description
              "Authentication Header Protocol";
          }
          enum "eigrp" {
            value 88;
            description
              "Cisco's EIGRP Routing Protocol";
          }
          enum "esp" {
            value 50;
            description
              "Encapsulation Security Payload";
          }
          enum "gre" {
            value 47;
            description
              "Cisco's GRE Tunneling";
          }
          enum "icmp" {
            value 1;
            description
              "Internet Control Message Protocol";
          }
          enum "igmp" {
            value 2;
            description
              "Internet Gateway Message Protocol";
          }
          enum "igrp" {
            value 9;
            description
              "Cisco's IGRP Routing Protocol";
          }
          enum "ipinip" {
            value 4;
            description "IP in IP tunneling";
          }
          enum "ipv4" {
            value 512;
            description "Any IPv4 Protocol";
          }
          enum "nos" {
            value 94;
            description
              "KA9Q NOS Compatible IP over IP Tunneling";
          }
          enum "ospf" {
            value 89;
            description
              "OSPF Routing Protocol";
          }
          enum "pcp" {
            value 108;
            description
              "Payload Compression Protocol";
          }
          enum "pim" {
            value 103;
            description
              "Protocol Independent Multicast";
          }
          enum "sctp" {
            value 132;
            description
              "Stream Control Transmission Protocol";
          }
          enum "tcp" {
            value 6;
            description
              "Transport Control Protocol";
          }
          enum "udp" {
            value 17;
            description
              "User Datagram Protocol";
          }
        }
      }
    }

    typedef ipv4-port-number {
      type union {
        type ipv4-tcp-port-number;
        type ipv4-udp-port-number;
      }
    }

    typedef ipv4-tcp-port-number {
      type union {
        type uint16 {
          range "0..65535";
        }
        type enumeration {
          enum "Echo" {
            value 7;
            description "Echo";
          }
          enum "Discard" {
            value 9;
            description "Discard";
          }
          enum "Daytime" {
            value 13;
            description "Daytime";
          }
          enum "CharGen" {
            value 19;
            description
              "Character generator";
          }
          enum "FTPData" {
            value 20;
            description
              "FTP data connections (used infrequently)";
          }
          enum "FTP" {
            value 21;
            description
              "File Transfer Protocol";
          }
          enum "SSH" {
            value 22;
            description "Secure Shell";
          }
          enum "Telnet" {
            value 23;
            description "Telnet";
          }
          enum "SMTP" {
            value 25;
            description
              "Simple Mail Transport Protocol";
          }
          enum "Time" {
            value 37;
            description "Time";
          }
          enum "WhoIs" {
            value 43;
            description "Nicname";
          }
          enum "TACACS" {
            value 49;
            description
              "TAC Access Control System";
          }
          enum "DNS" {
            value 53;
            description
              "Domain Name Service";
          }
          enum "Gopher" {
            value 70;
            description "Gopher";
          }
          enum "Finger" {
            value 79;
            description "Finger";
          }
          enum "WWW" {
            value 80;
            description
              "World Wide Web (HTTP)";
          }
          enum "Hostname" {
            value 101;
            description
              "NIC hostname server";
          }
          enum "POP2" {
            value 109;
            description
              "Post Office Protocol v2";
          }
          enum "POP3" {
            value 110;
            description
              "Post Office Protocol v3";
          }
          enum "SunRPC" {
            value 111;
            description
              "Sun Remote Procedure Call";
          }
          enum "Ident" {
            value 113;
            description "Ident Protocol";
          }
          enum "NNTP" {
            value 119;
            description
              "Network News Transport Protocol";
          }
          enum "BGP" {
            value 179;
            description
              "Border Gateway Protocol";
          }
          enum "IRC" {
            value 194;
            description
              "Internet Relay Chat";
          }
          enum "HTTPS" {
            value 443;
            description "HTTPS";
          }
          enum "PIMAutoRP" {
            value 496;
            description "PIM Auto-RP";
          }
          enum "ExecOrBiff" {
            value 512;
            description "Exec (rsh)";
          }
          enum "LoginOrWho" {
            value 513;
            description "Login (rlogin)";
          }
          enum "CmdOrSyslog" {
            value 514;
            description
              "Remote commands (rcmd)";
          }
          enum "LPD" {
            value 515;
            description "Printer service";
          }
          enum "UUCP" {
            value 540;
            description
              "Unix-to-Unix Copy Program";
          }
          enum "KLogin" {
            value 543;
            description "Kerberos login";
          }
          enum "KShell" {
            value 544;
            description "Kerberos shell";
          }
          enum "Talk" {
            value 517;
            description "Talk";
          }
          enum "LDP" {
            value 646;
            description
              "LDP session connection attempts (MPLS)";
          }
          enum "RADIUS" {
            value 1812;
            description
              "Radius Authentication protocolTalk";
          }
          enum "RADIUS_ACCT" {
            value 1813;
            description
              "Radius accounting Protocol";
          }
        }
      }
    }

    typedef ipv4-udp-port-number {
      type union {
        type uint16 {
          range "0..65535";
        }
        type enumeration {
          enum "BFD" {
            value 3784;
            description "BFD Port";
          }
          enum "ExecOrBiff" {
            value 512;
            description
              "Biff (mail notification, comsat";
          }
          enum "BootPC" {
            value 68;
            description
              "Bootstrap Protocol (BOOTP) client";
          }
          enum "BootPS" {
            value 67;
            description
              "Bootstrap Protocol (BOOTP) server";
          }
          enum "Discard" {
            value 9;
            description "Discard";
          }
          enum "DNSIX" {
            value 195;
            description
              "DNSIX security protocol auditing";
          }
          enum "DNS" {
            value 53;
            description
              "Domain Name Service (DNS)";
          }
          enum "Echo" {
            value 7;
            description "Echo";
          }
          enum "ISAKMP" {
            value 500;
            description
              "Internet Security Association and Key Management Protocol";
          }
          enum "LDP" {
            value 646;
            description
              "LDP hello packets (MPLS)";
          }
          enum "MobileIP" {
            value 434;
            description
              "Mobile IP registration";
          }
          enum "NameServer" {
            value 42;
            description
              "IEN116 name service (obsolete)";
          }
          enum "NetBIOS_DGS" {
            value 138;
            description
              "NetBios datagram service";
          }
          enum "NetBIOS_NS" {
            value 137;
            description
              "NetBios name service";
          }
          enum "NetBIOS_SS" {
            value 139;
            description
              "NetBios session service";
          }
          enum "NTP" {
            value 123;
            description
              "Network Time Protocol";
          }
          enum "PIMAutoRP" {
            value 496;
            description "PIM Auto-RP";
          }
          enum "RIP" {
            value 520;
            description
              "Routing Information Protocol (router, in.routed)";
          }
          enum "SNMP" {
            value 161;
            description
              "Simple Network Management Protocol";
          }
          enum "SNMPTrap" {
            value 162;
            description "SNMP Traps";
          }
          enum "SSH" {
            value 22;
            description
              "Secure Shell service";
          }
          enum "SunRPC" {
            value 111;
            description
              "Sun Remote Procedure Call";
          }
          enum "CmdOrSyslog" {
            value 514;
            description "System Logger";
          }
          enum "TACACS" {
            value 49;
            description
              "TAC Access Control System";
          }
          enum "Talk" {
            value 517;
            description "Talk";
          }
          enum "TFTP" {
            value 69;
            description
              "Trivial File Transfer Protocol";
          }
          enum "Time" {
            value 37;
            description "Time";
          }
          enum "LoginOrWho" {
            value 513;
            description "Who service (rwho)";
          }
          enum "XDMCP" {
            value 177;
            description
              "X Display Manager Control Protocol";
          }
        }
      }
    }

    typedef precedence-value {
      type union {
        type uint8 {
          range "0..7";
        }
        type enumeration {
          enum "Critical" {
            value 5;
            description
              "Match packets with critical precedence";
          }
          enum "Flash" {
            value 3;
            description
              "Match packets with flash precedence";
          }
          enum "FlashOverride" {
            value 4;
            description
              "Match packets with flash override precedence";
          }
          enum "Immediate" {
            value 2;
            description
              "Match packets with immediate precedence";
          }
          enum "Internet" {
            value 6;
            description
              "Match packets with internetwork control precedence";
          }
          enum "Network" {
            value 7;
            description
              "Match packets with network control precedence";
          }
          enum "Priority" {
            value 1;
            description
              "Match packets with priority precedence";
          }
          enum "Routine" {
            value 0;
            description
              "Match packets with routine precedence";
          }
        }
      }
    }

    typedef dscp-value {
      type union {
        type uint8 {
          range "0..63";
        }
        type enumeration {
          enum "af11" {
            value 10;
            description
              "Match packets with AF11 dscp (001010)";
          }
          enum "af12" {
            value 12;
            description
              "Match packets with AF12 dscp (001100)";
          }
          enum "af13" {
            value 14;
            description
              "Match packets with AF13 dscp (001110)";
          }
          enum "af21" {
            value 18;
            description
              "Match packets with AF21 dscp (010010)";
          }
          enum "af22" {
            value 20;
            description
              "Match packets with AF22 dscp (010100)";
          }
          enum "af23" {
            value 22;
            description
              "Match packets with AF23 dscp (010110)";
          }
          enum "af31" {
            value 26;
            description
              "Match packets with AF31 dscp (011010)";
          }
          enum "af32" {
            value 28;
            description
              "Match packets with AF32 dscp (011100)";
          }
          enum "af33" {
            value 30;
            description
              "Match packets with AF33 dscp (011110)";
          }
          enum "af41" {
            value 34;
            description
              "Match packets with AF41 dscp (100010)";
          }
          enum "af42" {
            value 36;
            description
              "Match packets with AF42 dscp (100100)";
          }
          enum "af43" {
            value 38;
            description
              "Match packets with AF43 dscp (100110)";
          }
          enum "cs1" {
            value 8;
            description
              "Match packets with CS1(precedence 1) dscp (001000)";
          }
          enum "cs2" {
            value 16;
            description
              "Match packets with CS2(precedence 2) dscp (010000)";
          }
          enum "cs3" {
            value 24;
            description
              "Match packets with CS3(precedence 3) dscp (011000)";
          }
          enum "cs4" {
            value 32;
            description
              "Match packets with CS4(precedence 4) dscp (100000)";
          }
          enum "cs5" {
            value 40;
            description
              "Match packets with CS5(precedence 5) dscp (101000)";
          }
          enum "cs6" {
            value 48;
            description
              "Match packets with CS6(precedence 6) dscp (110000)";
          }
          enum "cs7" {
            value 56;
            description
              "Match packets with CS7(precedence 7) dscp (111000)";
          }
          enum "default" {
            value 0;
            description
              "Match packets with default DSCP (000000)";
          }
          enum "ef" {
            value 46;
            description
              "Match packets with EF dscp (101110)";
          }
        }
      }
    }

    typedef tcp-bits-type {
      type bits {
        bit fin {
          position 0;
          description
            "Match on the FIN bit (0x01)";
        }
        bit syn {
          position 1;
          description
            "Match on the SYN bit (0x02)";
        }
        bit rst {
          position 2;
          description
            "Match on the RST bit (0x04)";
        }
        bit psh {
          position 3;
          description
            "Match on the PSH bit (0x08)";
        }
        bit ack {
          position 4;
          description
            "Match on the ACK bit (0x10)";
        }
        bit urg {
          position 5;
          description
            "Match on the URG bit (0x20)";
        }
      }
      description "acl tcp bits number";
    }

    typedef ipv4-icmp-message-type {
      type enumeration {
        enum "MobileRedirect" {
          value 2162687;
          description "Mobile host redirect";
        }
        enum "ConversionError" {
          value 2097151;
          description "Datagram conversion";
        }
        enum "Traceroute" {
          value 2031615;
          description "Traceroute";
        }
        enum "MaskReply" {
          value 1245183;
          description "Mask replies";
        }
        enum "MaskRequest" {
          value 1179647;
          description "Mask requests";
        }
        enum "InformationReply" {
          value 1114111;
          description "Information replies";
        }
        enum "InformationRequest" {
          value 1048575;
          description "Information request";
        }
        enum "TimestampReply" {
          value 983039;
          description "Timestamp replies";
        }
        enum "TimestampRequest" {
          value 917503;
          description "Timestamp requests";
        }
        enum "ParameterProblem" {
          value 851967;
          description
            "All parameter problems";
        }
        enum "TimeExceeded" {
          value 786431;
          description "All time exceeds";
        }
        enum "RouterSolicitation" {
          value 720895;
          description
            "Router discovery solicitations";
        }
        enum "RouterAdvertisement" {
          value 655359;
          description
            "Router discovery advertisements";
        }
        enum "AlternateAddress" {
          value 458751;
          description "Alternate address";
        }
        enum "Echo" {
          value 589823;
          description "Echo (ping)";
        }
        enum "Redirect" {
          value 393215;
          description "All redirects";
        }
        enum "SourceQuench" {
          value 327679;
          description "Source quenches";
        }
        enum "Unreachable" {
          value 262143;
          description "All unreachables";
        }
        enum "EchoReply" {
          value 65535;
          description "Echo reply";
        }
        enum "NetworkUnreachable" {
          value 196608;
          description "Net unreachable";
        }
        enum "HostUnreachable" {
          value 196609;
          description "Host unreachable";
        }
        enum "ProtocolUnreachable" {
          value 196610;
          description "Protocol unreachable";
        }
        enum "PortUnreachable" {
          value 196611;
          description "Port unreachable";
        }
        enum "PacketTooBig" {
          value 196612;
          description
            "Fragmentation needed and DF set";
        }
        enum "SourceRouteFailed" {
          value 196613;
          description "Source route failed";
        }
        enum "NetworkUnknown" {
          value 196614;
          description "Network unknown";
        }
        enum "HostUnknown" {
          value 196615;
          description "Host unknown";
        }
        enum "HostIsolated" {
          value 196616;
          description "Host isolated";
        }
        enum "DODNetProhibited" {
          value 196617;
          description "Net prohibited";
        }
        enum "DODHostProhibited" {
          value 196618;
          description "Host prohibited";
        }
        enum "NetTOSUnreachable" {
          value 196620;
          description
            "Network unreachable for TOS";
        }
        enum "HostTOSUnreachable" {
          value 196619;
          description
            "Host unreachable for TOS";
        }
        enum "AdministrativelyProhibited" {
          value 196621;
          description
            "Administratively prohibited";
        }
        enum "HostPrecedenceUnreachable" {
          value 196622;
          description
            "Host unreachable for precedence";
        }
        enum "PrecedenceUnreachable" {
          value 196623;
          description "Precedence cutoff";
        }
        enum "NetworkRedirect" {
          value 327680;
          description "Network redirect";
        }
        enum "HostRedirect" {
          value 327681;
          description "Host redirect";
        }
        enum "NetTOSRedirect" {
          value 327682;
          description "Net redirect for TOS";
        }
        enum "HostTOSRedirect" {
          value 327683;
          description
            "Host redirect for TOS";
        }
        enum "TTLExceeded" {
          value 720896;
          description "TTL exceeded";
        }
        enum "ReassemblyTimeout" {
          value 720897;
          description "Reassembly timeout";
        }
        enum "GeneralParameterProblem" {
          value 786432;
          description "Parameter problem";
        }
        enum "OptionMissing" {
          value 786433;
          description
            "Parameter required but not present";
        }
        enum "NoRoomForOption" {
          value 786434;
          description
            "Parameter required but no room";
        }
      }
    }

    typedef ipv6-protocol {
      type union {
        type uint8 {
          range "0..255";
        }
        type enumeration {
          enum "ahp" {
            value 51;
            description
              "Authentication Header Protocol";
          }
          enum "eigrp" {
            value 88;
            description
              "Cisco's EIGRP Routing Protocol";
          }
          enum "esp" {
            value 50;
            description
              "Encapsulation Security Payload";
          }
          enum "gre" {
            value 47;
            description
              "Cisco's GRE Tunneling";
          }
          enum "icmpv6" {
            value 58;
            description
              "Internet Control Message Protocol";
          }
          enum "igrp" {
            value 9;
            description
              "Cisco's IGRP Routing Protocol";
          }
          enum "ipv6" {
            value 513;
            description "Any IPv6 Protocol";
          }
          enum "ospf" {
            value 89;
            description
              "OSPF Routing Protocol";
          }
          enum "pcp" {
            value 108;
            description
              "Payload Compression Protocol";
          }
          enum "pim" {
            value 103;
            description
              "Protocol Independent Multicast";
          }
          enum "sctp" {
            value 132;
            description
              "Stream Control Transmission Protocol";
          }
          enum "tcp" {
            value 6;
            description
              "Transport Control Protocol";
          }
          enum "udp" {
            value 17;
            description
              "User Datagram Protocol";
          }
        }
      }
    }

    typedef ipv6-port-number {
      type union {
        type ipv6-tcp-port-number;
        type ipv6-udp-port-number;
      }
    }

    typedef ipv6-tcp-port-number {
      type union {
        type uint16 {
          range "0..65535";
        }
        type enumeration {
          enum "Echo" {
            value 7;
            description "Echo";
          }
          enum "Discard" {
            value 9;
            description "Discard";
          }
          enum "Daytime" {
            value 13;
            description "Daytime";
          }
          enum "CharGen" {
            value 19;
            description
              "Character generator";
          }
          enum "FTPData" {
            value 20;
            description
              "FTP data connections (used infrequently)";
          }
          enum "FTP" {
            value 21;
            description
              "File Transfer Protocol";
          }
          enum "SSH" {
            value 22;
            description "Secure Shell";
          }
          enum "Telnet" {
            value 23;
            description "Telnet";
          }
          enum "SMTP" {
            value 25;
            description
              "Simple Mail Transport Protocol";
          }
          enum "Time" {
            value 37;
            description "Time";
          }
          enum "WhoIs" {
            value 43;
            description "Nicname";
          }
          enum "TACACS" {
            value 49;
            description
              "TAC Access Control System";
          }
          enum "DNS" {
            value 53;
            description
              "Domain Name Service";
          }
          enum "Gopher" {
            value 70;
            description "Gopher";
          }
          enum "Finger" {
            value 79;
            description "Finger";
          }
          enum "WWW" {
            value 80;
            description
              "World Wide Web (HTTP)";
          }
          enum "Hostname" {
            value 101;
            description
              "NIC hostname server";
          }
          enum "POP2" {
            value 109;
            description
              "Post Office Protocol v2";
          }
          enum "POP3" {
            value 110;
            description
              "Post Office Protocol v3";
          }
          enum "SunRPC" {
            value 111;
            description
              "Sun Remote Procedure Call";
          }
          enum "Ident" {
            value 113;
            description "Ident Protocol";
          }
          enum "NNTP" {
            value 119;
            description
              "Network News Transport Protocol";
          }
          enum "BGP" {
            value 179;
            description
              "Border Gateway Protocol";
          }
          enum "IRC" {
            value 194;
            description
              "Internet Relay Chat";
          }
          enum "HTTPS" {
            value 443;
            description
              "Internet Relay Chat";
          }
          enum "PIMAutoRP" {
            value 496;
            description "PIM Auto-RP";
          }
          enum "ExecOrBiff" {
            value 512;
            description "Exec (rsh)";
          }
          enum "LoginOrWho" {
            value 513;
            description "Login (rlogin)";
          }
          enum "CmdOrSyslog" {
            value 514;
            description
              "Remote commands (rcmd)";
          }
          enum "LPD" {
            value 515;
            description "Printer service";
          }
          enum "UUCP" {
            value 540;
            description
              "Unix-to-Unix Copy Program";
          }
          enum "KLogin" {
            value 543;
            description "Kerberos login";
          }
          enum "KShell" {
            value 544;
            description "Kerberos shell";
          }
          enum "Talk" {
            value 517;
            description "Talk";
          }
          enum "RADIUS" {
            value 1812;
            description "Kerberos shell";
          }
          enum "RADIUS_ACCT" {
            value 1813;
            description "Talk";
          }
        }
      }
    }

    typedef ipv6-udp-port-number {
      type union {
        type uint16 {
          range "0..65535";
        }
        type enumeration {
          enum "BFD" {
            value 3784;
            description "BFD";
          }
          enum "ExecOrBiff" {
            value 512;
            description
              "Biff (mail notification, comsat";
          }
          enum "BootPC" {
            value 68;
            description
              "Bootstrap Protocol (BOOTP) client";
          }
          enum "BootPS" {
            value 67;
            description
              "Bootstrap Protocol (BOOTP) server";
          }
          enum "Discard" {
            value 9;
            description "Discard";
          }
          enum "DNSIX" {
            value 195;
            description
              "DNSIX security protocol auditing";
          }
          enum "DNS" {
            value 53;
            description
              "Domain Name Service (DNS)";
          }
          enum "Echo" {
            value 7;
            description "Echo";
          }
          enum "ISAKMP" {
            value 500;
            description
              "Internet Security Association and Key Management Protocol";
          }
          enum "MobileIP" {
            value 434;
            description
              "Mobile IP registration";
          }
          enum "NameServer" {
            value 42;
            description
              "IEN116 name service (obsolete)";
          }
          enum "NetBIOS_DGS" {
            value 138;
            description
              "NetBios datagram service";
          }
          enum "NetBIOS_NS" {
            value 137;
            description
              "NetBios name service";
          }
          enum "NetBIOS_SS" {
            value 139;
            description
              "NetBios session service";
          }
          enum "NTP" {
            value 123;
            description
              "Network Time Protocol";
          }
          enum "PIMAutoRP" {
            value 496;
            description "PIM Auto-RP";
          }
          enum "RIP" {
            value 520;
            description
              "Routing Information Protocol (router, in.routed)";
          }
          enum "SNMP" {
            value 161;
            description
              "Simple Network Management Protocol";
          }
          enum "SNMPTrap" {
            value 162;
            description "SNMP Traps";
          }
          enum "SSH" {
            value 22;
            description
              "Secure Shell service";
          }
          enum "SunRPC" {
            value 111;
            description
              "Sun Remote Procedure Call";
          }
          enum "CmdOrSyslog" {
            value 514;
            description "System Logger";
          }
          enum "TACACS" {
            value 49;
            description
              "TAC Access Control System";
          }
          enum "Talk" {
            value 517;
            description "Talk";
          }
          enum "TFTP" {
            value 69;
            description
              "Trivial File Transfer Protocol";
          }
          enum "Time" {
            value 37;
            description "Time";
          }
          enum "LoginOrWho" {
            value 513;
            description "Who service (rwho)";
          }
          enum "XDMCP" {
            value 177;
            description
              "X Display Manager Control Protocol";
          }
          enum "LDP" {
            value 646;
            description "LDP";
          }
        }
      }
    }

    typedef ipv6-icmp-message-type {
      type enumeration {
        enum "ParameterProblem" {
          value 327679;
          description
            "All parameter problems";
        }
        enum "TimeExceeded" {
          value 262143;
          description "All time exceeds";
        }
        enum "RouterSolicitation" {
          value 8716288;
          description
            "Router discovery solicitations";
        }
        enum "RouterAdvertisement" {
          value 8781824;
          description
            "Router discovery advertisements";
        }
        enum "Echo" {
          value 8388608;
          description "Echo (ping)";
        }
        enum "EchoReply" {
          value 8454144;
          description "Echo reply";
        }
        enum "PortUnreachable" {
          value 65540;
          description "Port unreachable";
        }
        enum "PacketTooBig" {
          value 131072;
          description
            "Fragmentation needed and DF set";
        }
        enum "AdministrativelyProhibited" {
          value 65537;
          description
            "Administratively prohibited";
        }
        enum "TTLExceeded" {
          value 196608;
          description "TTL exceeded";
        }
        enum "ReassemblyOption" {
          value 196609;
          description "Reassembly timeout";
        }
        enum "ErroneousHeaderField" {
          value 262144;
          description
            "Erroneous header field";
        }
        enum "UnrecognizedNextHeader" {
          value 262145;
          description
            "Unrecognized Next Header type";
        }
        enum "UnrecognizedOption" {
          value 262146;
          description
            "Unrecognized IPv6 option";
        }
        enum "DestinationUnreachable" {
          value 131071;
          description
            "Destination Unreachable";
        }
        enum "AddressUnreachable" {
          value 65539;
          description "Address Unreachable";
        }
        enum "BeyondScopeOfSourceAddress" {
          value 65538;
          description
            "Unreachable beyond scope of address";
        }
        enum "GroupMembershipQuery" {
          value 8585215;
          description
            "Multicast Listener Query";
        }
        enum "GroupMembershipReport" {
          value 8650751;
          description
            "Multicast Listener report";
        }
        enum "GroupMembershipReduction" {
          value 8716287;
          description
            "Multicast Listener Done";
        }
        enum "NeighborRedirect" {
          value 8978432;
          description "Neighbor redirect";
        }
        enum "NoRouteToDestination" {
          value 65536;
          description
            "No route to destination";
        }
        enum
          "NodeInformationSuccessfulReply" {
          value 9175040;
          description
            "Node information successful reply";
        }
        enum
          "NodeInformationRequestIsRefused" {
          value 9175041;
          description
            "Node information reply rejected";
        }
        enum "RouterRenumbering" {
          value 9109503;
          description "Router renumbering";
        }
        enum "RRCommand" {
          value 9043968;
          description
            "Router renumbering command";
        }
        enum "RRResult" {
          value 9043969;
          description
            "Router renumbering result";
        }
        enum "RRSeqnumReset" {
          value 9044223;
          description
            "Router renumbering seqnum";
        }
        enum "QuerySubjectIsIPv6Address" {
          value 9109504;
          description
            "Query subject is ipv6 address";
        }
        enum "QuerySubjectIsDomainName" {
          value 9109505;
          description
            "Query subject is domain name";
        }
        enum "QuerySubjectIsIPv4Address" {
          value 9109506;
          description
            "Query subject is ipv4 address";
        }
        enum "NeighborSolicitation" {
          value 8847360;
          description
            "Neighbor discovery neighbor solicitations";
        }
        enum "NeighborAdvertisement" {
          value 8912896;
          description
            "Neighbor discovery neighbor advertisements";
        }
        enum "WhoAreYouRequest" {
          value 9175039;
          description "Who are you request";
        }
        enum "WhoAreYouReply" {
          value 9240575;
          description "Who are you reply";
        }
        enum "UnknownQueryType" {
          value 9175042;
          description "Unknown query type";
        }
      }
    }

    typedef header-bits-type {
      type bits {
        bit routing {
          position 0;
          description
            "Match if routing header is present";
        }
        bit destopts {
          position 1;
          description
            "Match if destination opts header is present";
        }
        bit hop-by-hop {
          position 2;
          description
            "Match if hop-by-hop opts header is present";
        }
        bit fragments {
          position 3;
          description
            "Match if fragment extension header contains a non-zero fragment offset";
        }
        bit authen {
          position 5;
          description
            "Match if authentication header is present";
        }
      }
      description "IPv6 hearder bits number";
    }

    typedef vlan-id {
      type union {
        type uint16 {
          range "0..4095";
        }
        type string {
          pattern
            '([0-9]{1,4})-([0-9]{1,4})';
        }
      }
    }
  }  // module Cisco-IOS-XR-um-access-list-datatypes