YANG Data Model for IPv6 Neighbor Discovery

YANG Data Model for IPv6 Neighbor Discovery China Telecom

Guangzhou China zhangf52@chinatelecom.cn

China Telecom

Guangzhou China zhuyq8@chinatelecom.cn

Huawei

China lana.wubo@huawei.com

China Telecom

Guangzhou China hujy5@chinatelecom.cn

Internet Area 6MAN This document defines a YANG data model to configure and manage IPv6 Neighbor Discovery (ND) and related functions, including IPv6 address resolution, redirect function, proxy Neighbor Advertisement, Neighbor Unreachability Detection (NUD), Duplicate Address Detection (DAD), and Enhanced Duplicate Address Detection.

This document defines a YANG data model "ietf-ipv6-nd" to configure and manage IPv6 Neighbor Discovery (ND) and related functions, including IPv6 address resolution , redirect function , proxy Neighbor Advertisement , Neighbor Unreachability Detection (NUD) , Duplicate Address Detection (DAD) , and Enhanced Duplicate Address Detection . Basic neighbor management functionality is supported by the "ietf-ip" YANG data model , and there is already a draft extending the basic ARP YANG functionality to cover optional ARP features and related statistics, which applies only to IPv4. Thus, an extension for IPv6 is required to maintain the Neighbor Cache entries. specifies the Neighbor Discovery protocol for IPv6, and specifies related functions. This document covers IPv6 address resolution , redirect function , proxy Neighbor Advertisement , NUD , DAD , and Enhanced DAD . Other function, such as Router and Prefix Discovery are covered by submodule "ietf-ipv6-router-advertisements" in , and static neighbor cache entries and Stateless Address Autoconfiguration are covered by module "ietf-ip" in . The model is based on YANG 1.1 as defined in and conforms to Network Management Datastore Architecture (NMDA) as defined in .

The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in BCP 14 when, and only when, they appear in all capitals, as shown here. The following terms are defined in :

configuration
system state
operational state

The following terms are defined in :

augment
container
data model
data node
leaf
list
module
schema tree

The following terms are defined in :

Neighbor Discovery
Neighbor Advertisement
proxy Neighbor Advertisement
Neighbor Unreachability Detection

The following term is defined in :

Duplicate Address Detection
Stateless Address Autoconfiguration

The following term is defined in :

Enhanced Duplicate Address Detection

Tree diagrams used in this document follow the notation defined in .

The YANG data model for IPv6 ND defines global configurations and augments the "ietf-ip" to provide per-interface configuration. It configures and manages IPv6 address resolution and redirect functions based on the IPv6 ND protocol, as well as other related functions, including proxy Neighbor Advertisement, NUD, DAD, and Enhanced DAD. Note that the features related to ICMP Router and Prefix Discovery are outside the scope of this module, since they have already been defined in the submodule "ietf-ipv6-router-advertisements" . Static neighbor cache entries and stateless address autoconfiguration are also out of the scope, as they are covered by "ietf-ip".

The data model augments the "/if:interfaces/if:interface/ip:ipv6" path defined in the "ietf-ip" module for IPv6 ND protocol . The "ns-interval" leaf defines the interval of retransmitting Neighbor Solicitation messages when a node tries to learn the link-layer address of another node. For the management of Neighbor Cache entries, the "stale-timeout" leaves define the timeout for STALE entries, while the "age" leaf augments the "/if:interfaces/if:interface/ip:ipv6/ip:neighbor" path to indicate the elapsed time since the Neighbor Cache entry was last confirmed reachable. The "statistics" container defines a collection of interface-related statistics on IPv6 ND messages. The "redirect" leaf enables the sending of Redirect messages.

The "proxy-na" leaf augmenting "ietf-ip" defines the configurations of proxy Neighbor Advertisements , which indicate that a router is willing to accept packets not explicitly addressed to itself. After receiving a Neighbor Solicitation message whose destination address is not its own IPv6 address, a proxy router replies to the source with a Neighbor Advertisement message carrying its own link-layer address and the IPv6 address of the original destination.

The "reachable-time" leaf defines the time to confirm a neighbor's reachability for NUD. A neighbor's state changes from REACHABLE to STALE when there is no other reachability confirmation from the neighbor within the "reachable-time". The "ns-interval" leaf also indicates the interval for retransmitting Neighbor Solicitation messages used by NUD.

The "dup-addr-detect-transmits" leaf, which indicates the number of consecutive Neighbor Solicitation messages sent while performing Duplicate Address Detection (DAD) , has already been defined in "ietf-ip" . The value of "dup-addr-detect-transmits" can be set to 0 to disable DAD. The "ns-interval" leaf also indicates the interval for retransmitting Neighbor Solicitation messages during DAD. The "enhanced-dad" container augmenting "ietf-ip" defines the configurations for enhanced DAD , which is used to automatically detect the looped-back IPv6 ND messages used in DAD. The "auto-resolve" leaf enables automated action when a duplicate is detected. When enabled, a trusted router may log a system management message, drop the received ND message, and block the untrusted IPv6 host nodes from which the duplicate NS (DAD) or NA message was received.

This document defines the YANG module "ietf-ipv6-nd", which has the following structure.

This section presents the YANG module of IPv6 Neighbor Discovery defined in this document. This module imports modules from Common YANG Data Types , A YANG Data Model for Interface Management , and A YANG Data Model for IP Management .

file "ietf-ipv6-nd@2026-02-27.yang" module ietf-ipv6-nd { yang-version 1.1; namespace "urn:ietf:params:xml:ns:yang:ietf-ipv6-nd"; prefix v6nd; import ietf-yang-types { prefix yang; reference "RFC 6991: Common YANG Data Types"; } import ietf-interfaces { prefix if; reference "RFC 8343: A Yang Data Model for Interface Management"; } import ietf-ip { prefix ip; reference "RFC 8344: A Yang Data Model for IP Management"; } organization "IETF IPv6 Maintenance Working Group (6man)"; contact "WG Web: WG List: Author: Fan Zhang Author: Yongqing Zhu Author: Bo Wu Author: Jiayuan Hu "; description "This YANG module defines a YANG data model to configure and manage IPv6 Neighbor Discovery (ND) and related functions, including IPv6 address resolution, redirect, proxy Neighbor Advertisement, Neighbor Unreachability Detection (NUD), Duplicate Address Detection (DAD), and Enhanced DAD. The model is based on YANG 1.1 as defined in RFC 7950 and conforms to Network Management Datastore Architecture (NMDA) as defined in RFC 8342. Copyright (c) 2026 IETF Trust and the persons identified as authors of the code. All rights reserved. Redistribution and use in source and binary forms, with or without modification, is permitted pursuant to, and subject to the license terms contained in, the Revised BSD License set forth in Section 4.c of the IETF Trust's Legal Provisions Relating to IETF Documents (https://trustee.ietf.org/license-info). This version of this YANG module is part of RFC XXXX (https://www.rfc-editor.org/info/rfcXXXX); see the RFC itself for full legal notices. The key words 'MUST', 'MUST NOT', 'REQUIRED', 'SHALL', 'SHALL NOT', 'SHOULD', 'SHOULD NOT', 'RECOMMENDED', 'NOT RECOMMENDED', 'MAY', and 'OPTIONAL' in this document are to be interpreted as described in BCP 14 (RFC 2119) (RFC 8174) when, and only when, they appear in all capitals, as shown here."; reference "RFC4861: Neighbor Discovery for IP version 6 (IPv6) RFC4862: IPv6 Stateless Address Autoconfiguration RFC7527: Enhanced Duplicate Address Detection"; revision 2026-02-27 { description "Initial version"; reference "RFC XXXX: YANG Data Model for IPv6 Neighbor Discovery"; } /* Data nodes */ container nd { description "Global parameters for IPv6 ND."; leaf stale-timeout { type uint32; units "seconds"; description "The global timeout for Neighbor Cache entry in the STALE state. This value applies to all interfaces unless overridden by a per-interface setting."; reference "RFC4861: Neighbor Discovery for IP version 6 (IPv6) Section 5.3"; } } augment "/if:interfaces/if:interface/ip:ipv6" { description "Augments interface configuration and state data with parameters of IPv6 ND."; container nd { description "Parameters of IPv6 ND."; leaf reachable-time { type uint32; units "milliseconds"; default "30000"; description "The time to confirm a neighbor's reachability for NUD."; reference "RFC4861: Neighbor Discovery for IP version 6 (IPv6) Section 6.3.2 - BaseReachableTime"; } leaf ns-interval { type uint32 { range "1..max"; } units "milliseconds"; default "1000"; description "The interval of retransmitting Neighbor Solicitations to a neighbor for address resolution, NUD, or DAD."; reference "RFC4861: Neighbor Discovery for IP version 6 (IPv6) Section 6.3.2"; } leaf stale-timeout { type uint32; units "seconds"; description "The timeout for Neighbor Cache entry in the STALE state on the interface. If configured, this value overrides the global stale-timeout."; reference "RFC4861: Neighbor Discovery for IP version 6 (IPv6) Section 5.3"; } leaf redirect { type boolean; default "false"; description "Controls whether sending of ICMP Redirect messages on the interface is enabled or disabled. true - Sending of ICMP Redirect messages is enabled, false - Sending of ICMP Redirect messages is disabled."; reference "RFC4861: Neighbor Discovery for IP version 6 (IPv6) Section 8"; } leaf proxy-na { type boolean; default "false"; description "Controls whether proxies for one or more other nodes by sending proxy Neighbor Advertisement. true - Proxy NA is enabled, false - Proxy NA is disabled."; reference "RFC4861: Neighbor Discovery for IP version 6 (IPv6) Section 7.2.8"; } container enhanced-dad { description "Parameters of Enhanced DAD algorithm."; leaf enable { type boolean; default "false"; description "Controls whether Enhanced DAD algorithm is enabled or disabled."; reference "RFC7527: Enhanced Duplicate Address Detection Section 4"; } leaf auto-resolve { when "../enable = 'true'"; type boolean; default "false"; description "Controls whether the automated action is taken when detecting duplicates. A trusted router can log a system management message, drop the received ND message, and block the untrusted IPv6 host nodes from which the duplicate NS(DAD) or NA message was received."; reference "RFC7527: Enhanced Duplicate Address Detection Section 5"; } reference "RFC7527: Enhanced Duplicate Address Detection"; } container statistics { config false; description "A collection of interface-related statistics about IPv6 ND messages."; leaf in-ns-pkts { type yang:counter64; description "The number of received Neighbor Solicitation packets."; } leaf in-na-pkts { type yang:counter64; description "The number of received Neighbor Advertisement packets."; } leaf in-rs-pkts { type yang:counter64; description "The number of received Router Solicitation packets."; } leaf in-ra-pkts { type yang:counter64; description "The number of received Router Advertisement packets."; } leaf in-redirect-pkts { type yang:counter64; description "The number of received Redirect packets."; } leaf out-ns-pkts { type yang:counter64; description "The number of sent Neighbor Solicitation packets."; } leaf out-na-pkts { type yang:counter64; description "The number of sent Neighbor Advertisement packets."; } leaf out-rs-pkts { type yang:counter64; description "The number of sent Router Solicitation packets."; } leaf out-ra-pkts { type yang:counter64; description "The number of sent Router Advertisement packets."; } leaf out-redirect-pkts { type yang:counter64; description "The number of sent Redirect packets."; } } } } augment "/if:interfaces/if:interface/ip:ipv6/ip:neighbor" { description "Augments IPv6 neighbor list with parameters of IPv6 address resolution based on IPv6 ND."; leaf age { when "../ip:origin = 'dynamic'"; type uint32; units "seconds"; config false; description "The time that has passed since receipt of the last reachability confirmation for the neighbor. Ignored when the neighbor entry is static."; reference "RFC4861: Neighbor Discovery for IP version 6 (IPv6) Section 7.3.3"; } } }

]]>



    
      This document registers a URI in the IETF XML registry . Following
        the format in , the following registration is requested to be made:

      

      This document registers a YANG module in the YANG Module Names registry .

      
    

    
      The YANG module specified in this document defines a schema for data that is designed to be
        accessed via network management protocols such as NETCONF  or RESTCONF  . The lowest NETCONF layer is
        the secure transport layer, and the mandatory-to-implement secure transport is Secure Shell
        (SSH) . The lowest RESTCONF layer is HTTPS, and the mandatory-to-implement
        secure transport is TLS .

      The NETCONF Access Control Model (NACM)  provides the means to
        restrict access for particular NETCONF or RESTCONF users to a preconfigured subset of all
        available NETCONF or RESTCONF protocol operations and content.

      There are a number of data nodes defined in this YANG module that are
        writable/creatable/deletable (i.e., config true, which is the default).
        These data nodes may be considered sensitive or vulnerable in some
        network environments. Write operations (e.g., edit-config) to these data
        nodes without proper protection can have a negative effect on network
        operations. These are the subtrees and data nodes and their
        sensitivity/vulnerability:

      
        /if:interfaces/if:interface/ip:ipv6/ipv6-nd:nd/ipv6-nd:proxy-na - This
          leaf is used to enable proxy Neighbor Advertisement on an interface, which could allow
          spoofing traffic to be injected.
        /if:interfaces/if:interface/ip:ipv6/ipv6-nd:nd/ipv6-nd:reachable-time - This
          leaf is used to consider a neighbor reachable since the last confirmation of reachability,
          which could be set to big values to prolong the effect of spoofing Neighbor Cache entries
          or small values to cause unnecessary frequent NUDs.
        /if:interfaces/if:interface/ip:ipv6/ipv6-nd:nd/ipv6-nd:ns-interval - This
          leaf is used to set the interval of retransmitting Neighbor Solicitations, which could
          allow DoS attacks.
        /ipv6-nd:nd/ipv6-nd:stale-timeout and
          /if:interfaces/if:interface/ip:ipv6/ipv6-nd:nd/ipv6-nd:stale-timeout - These
          leaves are used to set the timeout for Neighbor Cache entry in the STALE state,
          which could allow the consumption of cache.
      

      Some of the readable data nodes in the ietf-ipv6-nd module may be considered
        sensitive or vulnerable in some network environments. It is thus important to
        control read access (e.g., via get, get-config, or notification) to these data
        nodes.
    

    
      The authors would like to thank Bin Han, Acee Lindem, Jen Linkova, Éric Vyncke, and many
        others for their helpful comments and suggestions.
      Thanks to Ebben Aries for the review and comments.



  

    
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      

    

    
      
      
      
      

    

    
    
      
        This example illustrates the manual configuration for a Neighbor Cache entry of
          interface eth0 for
          peer 2001:db8::2 with link-layer address 00:00:5E:00:53:AB statically. 
        Note: '\' line wrapping per . 
        
           

  
  eth0
  ianaift:ethernetCsmacd
  

  
    
    
    2001:db8::2
    00:00:5E:00:53:AB
    
  
  

                    ]]>
        
      
      
        This example illustrates the configuration of enabling proxy Neighbor Advertisement, NUD,
          and DAD with setting the "dup-addr-detect-transmits" leaf as 1, the "reachable-time" leaf
          as 30000 milliseconds, and the "ns-interval" leaf as 1000 milliseconds.
        Note: '\' line wrapping per . 
        
          

  
  eth0
  ianaift:ethernetCsmacd
  

    
      1
      

      
        30000
        1000
        1200
        true
      
    
  

                    ]]>
        
      
    


    
      This appendix analyzes the functional elements related to the IPv6 ND protocol and
        identifies whether they are covered by existing IETF YANG modules or defined in this
        document.
      The table below maps the relevant RFCs, functions or parameters, the corresponding YANG
        modules, and their specific data paths. The functions are defined in 
        (Neighbor Discovery for IP version 6 (IPv6)),  (IPv6 Stateless
        Address Autoconfiguration), and other RFC extending IPv6 ND functions. The parameters are
        defined in Section 6.2.1 and 6.3.2 of , Section 5.1 of , and Section 3.3 of .

      Coverage of IPv6 ND Functions in YANG Modules
        
        
          
          
            RFC (Sec)
            Function/Parameter
            Covered by
            Path
          
        
        
          
          
            4861 s5.1
            Neighbor Cache
            ietf-ip
            /if:interfaces/if:interface/ip:ipv6/ip:neighbor
          
          
            4862 s5.1
            Prefix List (AdvPrefixList)
            ietf-ipv6-router-advertisements
            /if:interfaces/if:interface/ip:ipv6/v6ur:prefix-list
          
          
            4861 s6.2.1
            IsRouter
            ietf-ip
            /if:interfaces/if:interface/ip:ipv6/ip:forwarding
          
          
            4861 s6.2.1
            AdvSendAdvertisements
            ietf-ipv6-router-advertisements
            
              /if:interfaces/if:interface/ip:ipv6/v6ur:ipv6-router-advertisements
          
          
            4861 s6.2.1
            MaxRtrAdvInterval
            ietf-ipv6-router-advertisements
            
              /if:interfaces/if:interface/ip:ipv6/v6ur:max-rtr-adv-interval
          
          
            4861 s6.2.1
            MinRtrAdvInterval
            ietf-ipv6-router-advertisements
            
              /if:interfaces/if:interface/ip:ipv6/v6ur:min-rtr-adv-interval
          
          
            4861 s6.2.1
            AdvManagedFlag
            ietf-ipv6-router-advertisements
            /if:interfaces/if:interface/ip:ipv6/v6ur:managed-flag
          
          
            4861 s6.2.1
            AdvOtherConfigFlag
            ietf-ipv6-router-advertisements
            /if:interfaces/if:interface/ip:ipv6/v6ur:other-config-flag
          
          
            4861 s6.2.1
            AdvLinkMTU
            ietf-ipv6-router-advertisements
            /if:interfaces/if:interface/ip:ipv6/v6ur:link-mtu
          
          
            4861 s6.2.1
            AdvReachableTime (for RA)
            ietf-ipv6-router-advertisements
            /if:interfaces/if:interface/ip:ipv6/v6ur:reachable-time
          
          
            4861 s6.2.1
            AdvRetransTimer
            ietf-ipv6-router-advertisements
            /if:interfaces/if:interface/ip:ipv6/v6ur:retrans-timer
          
          
            4861 s6.2.1
            AdvCurHopLimit
            ietf-ipv6-router-advertisements
            /if:interfaces/if:interface/ip:ipv6/v6ur:cur-hop-limit
          
          
            4861 s6.2.1
            AdvDefaultLifetime
            ietf-ipv6-router-advertisements
            /if:interfaces/if:interface/ip:ipv6/v6ur:default-lifetime
          
          
            4861 s6.2.1
            AdvPrefixList /AdvValidLifetime
            ietf-ipv6-router-advertisements
            
              /if:interfaces/if:interface/ip:ipv6/v6ur:prefix-list/v6ur:prefix/v6ur:control-adv-prefixes/v6ur:advertise/v6ur:valid-lifetime
          
          
            4861 s6.2.1
            AdvPrefixList /AdvOnLinkFlag
            ietf-ipv6-router-advertisements
            
              /if:interfaces/if:interface/ip:ipv6/v6ur:prefix-list/v6ur:prefix/v6ur:control-adv-prefixes/v6ur:advertise/v6ur:on-link-flag
          
          
            4861 s6.2.1
            AdvPrefixList/ AdvPreferredLifetime
            ietf-ipv6-router-advertisements
            
              /if:interfaces/if:interface/ip:ipv6/v6ur:prefix-list/v6ur:prefix/v6ur:control-adv-prefixes/v6ur:advertise/v6ur:preferred-lifetime
          
          
            4861 s6.2.1
            AdvPrefixList/ AdvAutonomousFlag
            ietf-ipv6-router-advertisements
            
              /if:interfaces/if:interface/ip:ipv6/v6ur:prefix-list/v6ur:prefix/v6ur:control-adv-prefixes/v6ur:advertise/v6ur:autonomous-flag
          
          
            4861 s6.3.2
            BaseReachableTime
            ietf-ipv6-nd
            
              /if:interfaces/if:interface/ip:ipv6/v6nd:nd/v6nd:reachable-time
          
          
            4861 s6.3.2 /4862 s5.1
            RetransTimer(for NS)
            ietf-ipv6-nd
            
              /if:interfaces/if:interface/ip:ipv6/v6nd:nd/v6nd:ns-interval
          
          
            4861 s6.3.2
            CurHopLimit(for Node)
            (reuse AdvCurHopLimit)
             
          
          
            4861 s5.3
            Timeout for stale information
            ietf-ipv6-nd
            
              /if:interfaces/if:interface/ip:ipv6/v6nd:nd/v6nd:stale-timeout
          
          
            4861 s7.2.8
            Proxy Neighbor Advertisements
            ietf-ipv6-nd
            /if:interfaces/if:interface/ip:ipv6/v6nd:nd/v6nd:proxy-na
          
          
            4861 s8
            Redirect
            ietf-ipv6-nd
            /if:interfaces/if:interface/ip:ipv6/v6nd:nd/v6nd:redirect
          
          
            4862 s5.1
            DupAddrDetectTransmits
            ietf-ip
            
              /if:interfaces/if:interface/ip:ipv6/ip:dup-addr-detect-transmits
          
          
            4862 s5.5
            Creation of Global Addresses
            ietf-ip
            
              /if:interfaces/if:interface/ip:ipv6/ip:autoconf/ip:create-global-addresses
          
          
            4941
            Creation of Temporary Addresses
            ietf-ip
            
              /if:interfaces/if:interface/ip:ipv6/ip:autoconf/ip:create-temporary-addresses
          
          
            4941
            TEMP_VALID_LIFETIME
            ietf-ip
            
              /if:interfaces/if:interface/ip:ipv6/ip:autoconf/ip:temporary-valid-lifetime
          
          
            4941
            TEMP_PREFERRED_ LIFETIME
            ietf-ip
            
              /if:interfaces/if:interface/ip:ipv6/ip:autoconf/ip:temporary-preferred-lifetime
          
          
            7527 s4
            Enhanced Duplicate Address Detection
            ietf-ipv6-nd
            
              /if:interfaces/if:interface/ip:ipv6/v6nd:nd/v6nd:enhanced-dad
          
          
            7527 s5
            Automated Resolving of Duplicates
            ietf-ipv6-nd
            
              /if:interfaces/if:interface/ip:ipv6/v6nd:nd/v6nd:auto-resolve
          
        
      

    

    
    
      
        Huawei
        
          
            China
          
          hanbin3@huawei.com

RFC (Sec)	Function/Parameter	Covered by	Path
4861 s5.1	Neighbor Cache	ietf-ip	/if:interfaces/if:interface/ip:ipv6/ip:neighbor
4862 s5.1	Prefix List (AdvPrefixList)	ietf-ipv6-router-advertisements	/if:interfaces/if:interface/ip:ipv6/v6ur:prefix-list
4861 s6.2.1	IsRouter	ietf-ip	/if:interfaces/if:interface/ip:ipv6/ip:forwarding
4861 s6.2.1	AdvSendAdvertisements	ietf-ipv6-router-advertisements	/if:interfaces/if:interface/ip:ipv6/v6ur:ipv6-router-advertisements
4861 s6.2.1	MaxRtrAdvInterval	ietf-ipv6-router-advertisements	/if:interfaces/if:interface/ip:ipv6/v6ur:max-rtr-adv-interval
4861 s6.2.1	MinRtrAdvInterval	ietf-ipv6-router-advertisements	/if:interfaces/if:interface/ip:ipv6/v6ur:min-rtr-adv-interval
4861 s6.2.1	AdvManagedFlag	ietf-ipv6-router-advertisements	/if:interfaces/if:interface/ip:ipv6/v6ur:managed-flag
4861 s6.2.1	AdvOtherConfigFlag	ietf-ipv6-router-advertisements	/if:interfaces/if:interface/ip:ipv6/v6ur:other-config-flag
4861 s6.2.1	AdvLinkMTU	ietf-ipv6-router-advertisements	/if:interfaces/if:interface/ip:ipv6/v6ur:link-mtu
4861 s6.2.1	AdvReachableTime (for RA)	ietf-ipv6-router-advertisements	/if:interfaces/if:interface/ip:ipv6/v6ur:reachable-time
4861 s6.2.1	AdvRetransTimer	ietf-ipv6-router-advertisements	/if:interfaces/if:interface/ip:ipv6/v6ur:retrans-timer
4861 s6.2.1	AdvCurHopLimit	ietf-ipv6-router-advertisements	/if:interfaces/if:interface/ip:ipv6/v6ur:cur-hop-limit
4861 s6.2.1	AdvDefaultLifetime	ietf-ipv6-router-advertisements	/if:interfaces/if:interface/ip:ipv6/v6ur:default-lifetime
4861 s6.2.1	AdvPrefixList /AdvValidLifetime	ietf-ipv6-router-advertisements	/if:interfaces/if:interface/ip:ipv6/v6ur:prefix-list/v6ur:prefix/v6ur:control-adv-prefixes/v6ur:advertise/v6ur:valid-lifetime
4861 s6.2.1	AdvPrefixList /AdvOnLinkFlag	ietf-ipv6-router-advertisements	/if:interfaces/if:interface/ip:ipv6/v6ur:prefix-list/v6ur:prefix/v6ur:control-adv-prefixes/v6ur:advertise/v6ur:on-link-flag
4861 s6.2.1	AdvPrefixList/ AdvPreferredLifetime	ietf-ipv6-router-advertisements	/if:interfaces/if:interface/ip:ipv6/v6ur:prefix-list/v6ur:prefix/v6ur:control-adv-prefixes/v6ur:advertise/v6ur:preferred-lifetime
4861 s6.2.1	AdvPrefixList/ AdvAutonomousFlag	ietf-ipv6-router-advertisements	/if:interfaces/if:interface/ip:ipv6/v6ur:prefix-list/v6ur:prefix/v6ur:control-adv-prefixes/v6ur:advertise/v6ur:autonomous-flag
4861 s6.3.2	BaseReachableTime	ietf-ipv6-nd	/if:interfaces/if:interface/ip:ipv6/v6nd:nd/v6nd:reachable-time
4861 s6.3.2 /4862 s5.1	RetransTimer(for NS)	ietf-ipv6-nd	/if:interfaces/if:interface/ip:ipv6/v6nd:nd/v6nd:ns-interval
4861 s6.3.2	CurHopLimit(for Node)	(reuse AdvCurHopLimit)
4861 s5.3	Timeout for stale information	ietf-ipv6-nd	/if:interfaces/if:interface/ip:ipv6/v6nd:nd/v6nd:stale-timeout
4861 s7.2.8	Proxy Neighbor Advertisements	ietf-ipv6-nd	/if:interfaces/if:interface/ip:ipv6/v6nd:nd/v6nd:proxy-na
4861 s8	Redirect	ietf-ipv6-nd	/if:interfaces/if:interface/ip:ipv6/v6nd:nd/v6nd:redirect
4862 s5.1	DupAddrDetectTransmits	ietf-ip	/if:interfaces/if:interface/ip:ipv6/ip:dup-addr-detect-transmits
4862 s5.5	Creation of Global Addresses	ietf-ip	/if:interfaces/if:interface/ip:ipv6/ip:autoconf/ip:create-global-addresses
4941	Creation of Temporary Addresses	ietf-ip	/if:interfaces/if:interface/ip:ipv6/ip:autoconf/ip:create-temporary-addresses
4941	TEMP_VALID_LIFETIME	ietf-ip	/if:interfaces/if:interface/ip:ipv6/ip:autoconf/ip:temporary-valid-lifetime
4941	TEMP_PREFERRED_ LIFETIME	ietf-ip	/if:interfaces/if:interface/ip:ipv6/ip:autoconf/ip:temporary-preferred-lifetime
7527 s4	Enhanced Duplicate Address Detection	ietf-ipv6-nd	/if:interfaces/if:interface/ip:ipv6/v6nd:nd/v6nd:enhanced-dad
7527 s5	Automated Resolving of Duplicates	ietf-ipv6-nd	/if:interfaces/if:interface/ip:ipv6/v6nd:nd/v6nd:auto-resolve