Christoph Hellwig wrote:
Could it be possible OpenBSD doesn't properly deal with the tcp window scaling changes in 2.6.8? (http://lwn.net/Articles/92727/)
Unless there is present in the path one of those broken routers (mangling the window scale option), it's likely something else. Also, nntp traffic tends to be small and unaffected by window sizes. Any way to tell if that is so? Any chance you could make the tcpdumps available, if this has not already been resolved? We had a problem with sshd and other apps hanging due to glibc changes and unsafe signal handling in daemons, but this seems like something else.. thanks, Nivedita
I have noticed strangeness with the 2.6.8 kernel on both 686-smp and k7. 1) rsync from 2.6.8 to a 2.6.7 host hangs. 2) ssh from 2.6.8 to a 2.6.7 host hangs. 3) nntp from 2.6.8 hangs for 52 seconds before proceeding. 4) ssh from Openbsd to 2.6.8 hangs after SSH2_MSG_KEX_DH_GEX_REQUEST In 1-2 the network topology is as follows 2.6.8host <-ethernet-> OpenBSD <-openvpn-> OpenBSD <-ethernet-> 2.6.7host In 3 the network topology is as follows 2.6.8host <-ethernet-> OpenBSD <-openvpn-> OpenBSD <-internet-> nntp-server In 4 the network topology is as follows 2.6.8host <-ethernet-> OpenBSD