Re: [CentOS] making a route sticky

On Fri, 2005-08-05 at 14:59, Aleksandar Milivojevic wrote:

...

This should give you an interface that looks real enough to run zebra with rip or ospf and at least in theory it should work the same with a cisco at the other end.

I've just ran into one interesting problem with this approach. Seems that Netfilter is getting confused or something... Or at least I wasn't been able to make an usable config.

Does ifconfig show the GRE tunnel as a PTP interface or something with a reasonable netmask? If something is trying to figure out how to access it, you might want to make it look like a 4-host subnet (netmask 255.255.255.252) using the 2 usable addresses for the endpoints.