Re: [LARTC] routing patches seem to break output nat

[Tim Haak <tim@haak.co.uk>]

Hi

thanks for the quick response that seemed to work :)

Tim Haak

email: tim@haak.co.uk
cel:   0837787100

The executioner is, I hear, very expert, and my neck is very slender.
		-- Anne Boleyn

Julian Anastasov wrote:

	Hello,

On Tue, 23 Jan 2007, Tim Haak wrote:

  

We have applied the routing patches from 
http://www.ssi.bg/%7Eja/#routes. To 2.6.15 this seems to have broken our 
output natting. Has anyone else experienced this or any advice on how to 
fix. Is this working on the newer kernel i.e. 2.6.19 ? Any help would be 
appreciated.
    

	Month ago Bart Duchesne found a problem with the
routes patch for 2.6 where reply packet for -j DNAT connections initiated
in OUTPUT are dropped in pre-routing. I now updated the patches and if you 
have the same problem you can try the new diffs from today, eg. 

http://www.ssi.bg/~ja/routes-2.6.19-13.diff

	The fix for old patches is to remove the following extra check
(2 lines from net/ipv4/route.c) which obviously aborts ip_route_input()
with EINVAL for RTN_LOCAL when replies from remote host are destined to
our local IP:

+       if (lsrc && res.type != RTN_UNICAST && res.type != RTN_NAT)
+               goto e_inval;

Regards

--
Julian Anastasov <ja@ssi.bg>

  

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