On Fri, 25 Feb 2005, Jesse Guardiani wrote:
It's possible that some of the gentoo kernel patches are botching this up.
It's entirely possible some kernel patch has botched up the Netfilter NAT engine, and is why neither REDIRECT or DNAT works proper for you.
If could also be a rp_filter setting, making the kernel drop the traffic as invalid.
All signs in your traces indicates the packets gets thru the GRE tunnel, properly decapsulated, properly intercepted by Netfilter NAT and forwarded to the local TCP/IP stack. Then nothing happens...
Regards Henrik
