[mpls-linux-general] (no subject)

[Mattias P. <mat...@op...>]

The following setup results in a segmentation fault of mplsd:

.105               .106  .10             .9
X----10.1.0.104/29------A---10.7.2.8/29----B

Router A is a Cisco 3620 and router B is a linux machine. 
Both run OSPF, BGP and MPLS. A and B are bgp peers. They are in the same
BGP AS and in the same BGP and OSPF areas.

Router X runs BGP. It is in another BGP AS and peers with router A.

mplsd on B crashes when it receives some routes from
the bgp protocol. I have traced the problem and it
occurs because of the way bgp announces it routes:
Router A tells router B that network 10.1.0.8/29 can be
reached on nexthop 10.1.0.105. mplsd on Router B
however, can not handle this because it
does not have a direct connection to 10.1.0.105.

This results in a seg fault in mplsd (if_handle is null for the nexthop).

/Mattias Persson