[j-nsp] bgp ipv6 route problem

[Per Granath]

In 10.4 the automatically created "IPv4-compatible IPv6-address" changed, that is the (::ffff:12.1.1.1). 
Before 10.4 it used to be just (::12.1.1.1).

If you have mixture in the network it will be confusing...

BTW, the JNCIE exam is now using 10.4.

> i met some odd problem on junos 10.4 . two router(R1----R2) establish ipv4
> bgp session with ipv4 and ipv6 family. session is up. only the ipv4 route is
> accept. not ipv6 route.  so i trace on r1 . i find the ipv6 route is ignore.    but
> not problem on junos 9.4.
> lab at junos104.# run show bgp summary logical-system r1
> 12.1.1.1              400         26         28       0       1           9 Establ
>   inet.0: 1/1/1/0
>   inet6.0: 0/0/0/0
> 
> 
> 
> Mar 15 03:12:42.988838 bgp_nexthop_sanity: peer 12.1.1.1 (External AS 600)
> next hop ::ffff:12.1.1.1 unexpectedly remote, ignoring routes in this update
> Mar 15 03:12:42.988853 bgp_rcv_nlri: Peer 12.1.1.1 (External AS 600) Mar 15
> 03:12:42.988865 bgp_rcv_nlri: 2222:2222:2222::/48 Mar 15 03:12:42.988880