>> > I can push fine over ssh but pulling via rsync or scp always stalls >> > at about the same point which must be between 26MB and 52MB. I can >> > pull via netcat just fine. I've tried compiling HPN out of the >> > install on both the client and server and I've tried -C on the >> > client with the same result. I'm on Gentoo. Any ideas? >> >> I should have said I'm on openssh-6.6_p1-r1. >> > The first thing that comes to mind is you're over-taxing Linux's > selective ack's. Try disabling with: > > # echo 0 > /proc/sys/net/ipv4/tcp_sack That didn't do it but switching to MTU 576 seems to have fixed it. I suspect the root of the problem is that I'm using an AT&T modem/router with the server. I've had trouble using a proxy server there before and I discovered that the attached modem/router doesn't send ICMP responses. The solution proposed by AT&T was to put the modem/router into bridged mode but it's remote so I haven't been able to do that. Could this MTU discovery also point to the modem/router and could putting it into bridged mode solve the problem? What can I do in the meantime? Is it strange that netcat works with MTU 1500 and openssh doesn't? - Grant _______________________________________________ openssh-unix-dev mailing list openssh-unix-dev@xxxxxxxxxxx https://lists.mindrot.org/mailman/listinfo/openssh-unix-dev
