Hello, i don't know if this helps or is related to the problem, but i also had/have trouble with networking on FreeBSD DomUs, particularly with packet forwarding. For this purpose i'm running NetBSD 7.0 as a virtual router, because OpenBSD 5.9 seems to have the same problem. Perhaps this might help you narrow down the issue.
See also: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=188261 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=154428 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=197344 > On May 7, 2016, at 18:11, Stephen Jones <stephe...@livingcomputermuseum.org> > wrote: > > From: kmacy...@gmail.com [mailto:kmacy...@gmail.com] On Behalf Of K. Macy >> That would explain it. If the Linux backend supports TSO, then netfront will >> of course advertise TSO. And >presumably there's no way to query the >> netback, since Xen is linux-centric. Assuming you haven't already I would >> >disable TSO. > >> Or have you already tried that? > > This morning I've tried building a kernel without the TCP_OFFLOAD option. > When booting the new system, I see this in dmesg: > > xn0: <Virtual Network Interface> at device/vif/0 on xenbusb_front0 > xn0: Ethernet address: 00:16:3e:00:00:30 > xn0: backend features: feature-sg feature-gso-tcp4 > xn_txeof: WARNING: response is -1! > > Ifconfig -v xn0 looks like: > > xn0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500 > options=403<RXCSUM,TXCSUM,LRO> > > Pings work, ftp works (I was able to get the src.txz file off of > ftp.freebsd.org to build the kernel) > ssh does not work (handshaking fails) but I can login via telnet. However, > just about anything > that requires lots of output gets a bit clobbered. > > Are there any other kernel/sysctl parameters I should be disabling? > > It is almost working, but I need help to know if this is a netfront or a > netback issue. If it is a NetBSD issue > I'll move the discussion over to port-...@netbsd.org > _______________________________________________ > freebsd-xen@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-xen > To unsubscribe, send any mail to "freebsd-xen-unsubscr...@freebsd.org" _______________________________________________ freebsd-xen@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-xen To unsubscribe, send any mail to "freebsd-xen-unsubscr...@freebsd.org"
