[c-nsp] IOS 15.0 ipv6-related weirdness (fails to fallback to ipv4)

[Bruce Pinsky]

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Michael Ulitskiy wrote:
> Heh.
> 
> c2800#sh ipv6 interface                      
> VoIP-Null0 is up, line protocol is up
>   IPv6 is enabled, link-local address is FE80::226:99FF:FED0:1290 
>   No Virtual link-local address(es):
>   No global unicast address is configured
>   Joined group address(es):
>     FF02::1
>     FF02::1:FFD0:1290
>   MTU is 1500 bytes
>   ICMP error messages limited to one every 100 milliseconds
>   ICMP redirects are enabled
>   ICMP unreachables are sent
>   ND DAD is not supported
>   ND reachable time is 30000 milliseconds (using 30000)
> 
> Don't see any way to disable it. Can't even find any description what it is, but obviously it's
> voip-related and this router is indeed sip gateway.
> Now I have to make sure that sip servers it's talking to don't publish AAAA, until I manage
> to upgrade to something that has it fixed.


Have you tried?:

int voip-null0
 no ipv6 enable

- -- 
=========
bep



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