[c-nsp] IPv6-in-IPv6 tunnel?

[Dennis Peng]

Bernhard Schmidt [berni at birkenwald.de] wrote:
> Hi,
> 
> and another problem with 12.2(25)S ... IP(v4|v6)-over-IPv6 tunnels were
> configurable and even working in 12.2(18)S5 (on NPE-G1), but are not
> on 12.2(25)S anymore (on other boxes with NPE-300/400, but that should
> make no difference)
> 
> 12.2(18)S5:
> interface Tunnel301
>  ip address 10.254.1.1 255.255.255.252
>  ipv6 address 2001:1B10:1FFF:FFFF::1/64
>  tunnel source Loopback10
>  tunnel destination 2001:1B18:202::3
>  tunnel mode ipv6
> 
> works, on 12.2(25)S (same featureset, Provider-Image)
> 
> ROUTER(config-if)#tunnel destination 2001:1B18:202::3
>                                      ^
> % Invalid input detected at '^' marker.
> ROUTER(config-if)#tunnel mode ipv6
> % Incomplete command
> 
> (Incomplete being accepting ipv6ip)
> 
> Is this intended? There is no IPv6-over-IPv6-Tunnel in the feature

Yes, the feature was accidently included in 12.2(18)S and was backed
out. I believe it will be supported in a future release of 12.2S.

Dennis

> navigator, and the best match (IP-over-IPv6) is only available in 12.3T,
> so it shouldn't have worked with 12.2(18)S in the first place.
> 
> Bernhard
> 
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