> Subject: RE: ip_conntrack fails to track Windows Vista TCP connection > > > On Monday 2010-06-14 19:34, Fischer, Anna wrote: > > >>>> [something about Vista and TCP Delayed ACK] > >>>> > >>>> Is this a known issue? > >>> > >>> You're mentioning ip_conntrack, which is obsoleted for multiple > >>> years now. Which kernel version are you using? > >> > >> By definition of ip_conntrack, that must be older than 2.6.20. > > > >Yes, this is a 2.6.18 Xen kernel that I am using. Even if it is > obsolete, can you let me know if you are aware of such a problem ever > having caused any issues? I just want to get a feeling if I am at least > roughly on the right track while figuring out what the problem is. > > The 2.6.18 has a known problem with DSACK even when both > endpoints are Linux. My problem is really very specific to connection tracking and so the problem (bug?) is probably in the ip_conntrack_tcp module. TCP communication actually works fine, also connection tracking on (slow, non-bulk data) TCP traffic works. However, it fails with high throughput connections coming from newer Windows (Vista / 7) machines. If I switch those to TCP_NODELAY then it all works again. -- To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
