Crash with GRE und IPFW fwd

[Julian Kornberger]

Am 28.05.2015 um 16:07 schrieb Andrey V. Elsukov:
> Just noticed, you use ip_divert(4). gre(4) uses mbuf_tag to prevent
> infinity loop and stack exhausting. When packet goes through ip_divert,
> it loses this tag. You need to check your rules and avoid applying
> divert rules to GRE packets. Also you can use some netgraph based tcpmss
> implementation.

I only pass TCP SYN packets to divert.
This should not affect GRE packets?

ipfw add divert $tcpmssd_port tcp from any to not me setup

Thanks for your GRE module. I will give it a try.

-- 
Julian