Re: Transfer stalls with NAT under 2.6.24.3

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Wed, 26 Mar 2008, Patrick McHardy wrote:

> > During a run with stalls:
> > 
> > nf_ct_tcp: ACK is over the upper bound (ACKed data not seen yet) IN= OUT=
> > SRC=100.100.100.100 DST=200.200.200.200 LEN=80 TOS=0x00 PREC=0x00 TTL=56
> > ID=44105
> > DF PROTO=TCP SPT=22 DPT=35858 SEQ=4160349927 ACK=596614326 WINDOW=49248
> > RES=0x00 ACK URGP=0 OPT
> > (0101080A4558793C1B13CE350101051A491E8751491E8CA9491E7B71491E81F9491E40A9491E5B61) 
> > 
> Thanks, can you send a binary tcpdump (... -w file) of a connection
> that triggers these messages please?

Yes, a tcpdump of a full session which is stalled could help a lot.

But it almost look like as a SACK related problem: isn't there a (new) 
device between the communicating parties which performs ISN randomization 
and fails to adjust SACK?

Best regards,
Jozsef
-
E-mail  : kadlec@xxxxxxxxxxxxxxxxx, kadlec@xxxxxxxxxxxxxxx
PGP key : http://www.kfki.hu/~kadlec/pgp_public_key.txt
Address : KFKI Research Institute for Particle and Nuclear Physics
          H-1525 Budapest 114, POB. 49, Hungary
--
To unsubscribe from this list: send the line "unsubscribe netfilter" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html

[Index of Archives]     [Linux Netfilter Development]     [Linux Kernel Networking Development]     [Netem]     [Berkeley Packet Filter]     [Linux Kernel Development]     [Advanced Routing & Traffice Control]     [Bugtraq]

  Powered by Linux