>Number: 166645 >Category: kern >Synopsis: virtio rxcsum breaks checksum for local linux hosts IPv6 TCP >Confidential: no >Severity: non-critical >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Wed Apr 04 16:10:01 UTC 2012 >Closed-Date: >Last-Modified: >Originator: Arne Schwabe >Release: FreeBSD 9.0-RELEASE amd64 >Organization: University of Paderborn >Environment: FreeBSD mail.blinkt.de 9.0-RELEASE FreeBSD 9.0-RELEASE #0: Tue Jan 3 07:46:30 UTC 2012 r...@farrell.cse.buffalo.edu:/usr/obj/usr/src /sys/GENERIC amd64 >Description: When using rxsum, tcp checksum from offladed ipv6 packets of local kvm guest are incorrect and are thrown away. TCP4 connections work fine.
>How-To-Repeat: Setup a ubuntu precise 64 bit machine with kvm and a FreeBSD 9 machine both with virtio drivers. Connect them both to a bridge device (br0) which is connected to an external device (a bond0 device in this case). Do a telnet -6 fbsd ssh from the linux box. >Fix: Using ifconfig vtnet0 -rxcsum solves the problem. >Release-Note: >Audit-Trail: >Unformatted: _______________________________________________ freebsd-bugs@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-bugs To unsubscribe, send any mail to "freebsd-bugs-unsubscr...@freebsd.org"
