Users Guide

ipv6 address link-local
Configures a link-local IPv6 address on the interface to use instead of the link-local address that is automatically configured with
stateless autoconfiguration.
Syntax
ipv6 address ipv6-prefix link-local
Parameters ipv6-prefix — Enter an IPv6 prefix in x:x::y/mask format.
Defaults None
Command Mode INTERFACE
Usage
Information
● An interface can have only one link-local address. By default, an IPv6 link-local address
automatically generates with a MAC-based EUI-64 interface ID when a router boots up and
IPv6 is enabled. Use this command to manually configure a link-local address to replace the
autoconfigured address. For example, to configure a more user-friendly link-local address, replace
fe80::eef4:bbff:fefb:fa30/64 with fe80::1/64.
● The no version of this command removes the specified link-local address.
Example
OS10(config)# interface mgmt 1/1/1
OS10(conf-if-ma-1/1/1)# ipv6 address 2111:dddd:0eee::22/64 link-local
Supported
Releases
10.4.0E(R1) or later
ipv6 hop-by-hop
Enables and disables processing hop-by-hop options in IPv6 packet headers.
Syntax
ipv6 hop-by-hop
Parameters None
Defaults Hop-by-hop header options in an IPv6 packet do not process on an interface.
Command Mode INTERFACE
Usage
Information
● Use this command to enable local processing of IPv6 packets with hop-by-hop options in conformance
with the RFC 8200, IPv6 Specification.
● The no version of this command disables IPv6 processing of hop-by-hop header options.
Example:
Disable hop-by-
hop option
processing
OS10(config)# interface ethernet 1/2/3
OS10(conf-if-eth1/2/3)# no ipv6 hop-by-hop
Supported
Releases
10.4.0E(R1) or later
ipv6 nd dad
Disables or re-enables IPv6 duplicate address discovery (DAD).
Syntax
ipv6 nd dad {disable | enable | disable-ipv6-on-dad-failure}
Parameters
● disable — Disable duplicate address discovery on the interface.
● enable — Re-enable IPv6 duplicate address discovery if you have disabled it.
● disable-ipv6-on-dad-failure — Enable duplicate address discovery on the existing
autoconfigured link-local address.
Defaults Duplicate address discovery is enabled on an interface.
Command Mode INTERFACE
724 Layer 3