[c-nsp] IPv4 uRPF malfunction when enabling "mls ipv6 vrf" on 6500/sup720/SXI

[Phil Mayers]

On 25/01/11 11:20, Phil Mayers wrote:
> All,
>
> We recently had an irritating incident on a box running 12.2(33)SXI (the
> original release - no number!) where the following sequence of commands:
>
> mls ipv6 vrf
> vrf definition SOMETHING
>     address-family ipv6
> end
>
> ...caused IPv4 uRPF to break for all the default VRF interfaces.
> Diagnostics showed:

In case anyone is curious, this seems to still be present under SXI5. 
The actual issue seems to be changes to the IPv6 VRF routing table(s); a 
"shut / no shut" of the SVI will clear it under SXI3 (and possibly under 
SXI5, but I am avoiding fixing it until TAC can examine the box), but 
not under SXI.