On Thu, 4 Nov 2004 foo@porto.bmb.uga.edu wrote: > On Thu, Nov 04, 2004 at 12:48:38AM -0500, foo wrote: > > 'm seeing the same problem as in: > > Message-Id: 20041020191203.GA14356@merlin.emma.line.org > > or http://www.ussg.iu.edu/hypermail/linux/kernel/0410.2/1310.html > > > > I just upgraded a machine from 2.6.5 to 2.6.9, and when the amanda > > backup server contacts it, it sometimes replies with a UDP packet with a > > bad checksum. I'm using e1000 here, so it seems to not be related to > > the ethernet driver. I have a binary tcpdump if anyone's interested. > > I don't know why I didn't think of this at first, but I have another > identical machine that I upgraded at the same time that doesn't have the > problem. > > Here's a diff between their .configs - albarino is the one having > trouble. Maybe CONFIG_PACKET_MMAP? If someone can point me at a likely > config option to change I'll boot a new kernel for the next backup run > Friday night. > -CONFIG_IP_NF_AMANDA=y Disable that and it should work again, there's a bug in that conntrack helper that was introduced when some performance-fixes for non-linear packets went in. Davem has a patch for it in his tree, should find it's way into mainline soonish. Look at a netfilter-devel archive for the discussion if you are interested. /Martin - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
