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Changing the default distance does not update the distance of existing static routes, even if they were
assigned the original default distance. The new default distance will only be applied to static routes
created after invoking the ipv6 route distance command.
Syntax
ipv6 route distance <1-255>
no ipv6 route distance
no – This command resets the default static route preference value in the router to the original default
preference. Lower routepreference values are preferred when determining the best route.
Default Setting
1
Command Mode
Global Config
10.3.2.9 ipv6 mtu
This command sets the maximum transmission unit (MTU) size, in bytes, of IPv6 packets on an interface.
This command replaces the default or link MTU with a new MTU value.
Syntax
ipv6 mtu <1280-1500>
no ipv6 mtu
no – This command resets maximum transmission unit value to default value.
Default Setting
0 or link speed (MTU value is 1500)
Command Mode
Interface Config
10.3.2.10 ipv6 nd dad attempts
This command sets the number of duplicate address detection probes transmitted. Duplicate address
detection verifies that an IPv6 address on an interface is unique.
Syntax
ipv6 nd dad attempts <0 – 600>