[afnog] IPv6 addressing

[Andy Davidson]

On 24 May 2011, at 17:00, Frank Habicht wrote:

> there are 128 bits in an IP address and I think some are special.
> 
> brought up a link today and it "didn't work". (IPv4 worked)
> the Juniper didn't get the Cisco's IP in the ipv6 neighbors.
> funny enough the Cisco could ping the juniper.
> that's on a /112 subnet.
> changed the Cisco's IP from 2001:4258:500::2:114:8B83 to
> 2001:4258:500::2:114:2 and all works. (...now it's a different address)


Hi, Frank --

Nothing in 2000::/3 is 'special' in the way I think you mean, and both addresses should work on a point to point link.  Do you mean the nd table or something like the bgp table.  I think if you could ping then the nd table would have been correctly populated, and the issue was at another layer.

Thanks
Andy