On 01/18/2011 11:03 PM, Eric Dumazet wrote: > Le mardi 18 janvier 2011 à 22:42 +0100, Hans de Bruin a écrit : >> On 01/18/2011 09:06 PM, Jesse Gross wrote: ... > You could try "tcpdump -i eth0 ip6 -v" > > I guess you receive frames with bad checksums While you where staring at the code, I was fooling around with tcpdump. And while the problem is fixed, I still have some questions: Is there tool which shows whether a nic supports ipv6 checksum offload or not? I have captured http traffic (wget http://bootes/) between psion (my git tree following laptop) and bootes (something running 2.6.33.7). Attached is a capture with psion running 2.6.37 and one with this morning's git tree. Wat's with the 'chsum ... ( incorrect -> ' lines ? ifconfig does not show errors on either of the machines. -- Hans