On Fri, Apr 11, 2008 at 08:48:10AM +0200, Damian Weber wrote: > > From: Chuck Swiger <[EMAIL PROTECTED]> > > To: Damian Weber <[EMAIL PROTECTED]> > > Cc: freebsd-stable@freebsd.org > > Subject: Re: RELENG_6_3 ping and DUP packets > > > > On Apr 10, 2008, at 1:58 PM, Damian Weber wrote: > > > But here is the problem, pinging the machine from remote gives > > > > > > A.B.C.X$ ping A.B.C.D > > > PING A.B.C.D (A.B.C.D): 56 data bytes > > > 64 bytes from A.B.C.D: icmp_seq=0 ttl=64 time=0.272 ms > > > 64 bytes from A.B.C.D: icmp_seq=0 ttl=255 time=0.391 ms (DUP!) > > > > Please run "tcpdump -e icmp" on this box and repeat your testing. It > > will be most interesting to know whether you're seeing the same MAC > > address.... > > good point, but it's the same > > A.B.C.X# tcpdump -e icmp > tcpdump: listening on rl0, link-type EN10MB > 08:41:51.136023 0:20:ed:5f:3:3b 0:19:99:33:7c:9 ip 98: A.B.C.X > A.B.C.D: > icmp: echo request > 08:41:51.136171 0:19:99:33:7c:9 0:20:ed:5f:3:3b ip 98: A.B.C.D: icmp: echo > reply > 08:41:51.136343 0:19:99:33:7c:9 0:20:ed:5f:3:3b ip 98: A.B.C.D: icmp: echo > reply > 08:41:52.138366 0:20:ed:5f:3:3b 0:19:99:33:7c:9 ip 98: A.B.C.X > A.B.C.D: > icmp: echo request > 08:41:52.138447 0:19:99:33:7c:9 0:20:ed:5f:3:3b ip 98: A.B.C.D: icmp: echo > reply > 08:41:52.138692 0:19:99:33:7c:9 0:20:ed:5f:3:3b ip 98: A.B.C.D: icmp: echo > reply > ^C > 169 packets received by filter > 0 packets dropped by kernel
Possibly an interrupt is being called twice on the same packet? Shot in the dark, but try disabling MSI/MSI-X and see if the problem recurs. Put this in /boot/loader.conf: hw.pci.enable_msi="0" hw.pci.enable_msix="0" Reboot, and see if the problem continues. -- | Jeremy Chadwick jdc at parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB | _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[EMAIL PROTECTED]"
