vio0: flags=8843UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST mtu 1500
hwfeatures=10VLAN_MTU hardmtu 16000
Can you try a current snapshot?
Problem persists on 5.6. Further testing suggests that this may only be
happening if the packets exit the firewall via an ip6 tunnel (tun(4)
interface).
On Mon, Jul 21, 2014 at 11:05:54PM +0200, Alexander Bluhm wrote:
What application do you run on tun? aiccu?
Yes, aiccu.
Are the packets forwarded or locally generated?
Forwarded.
Where and how do you measure the checksum 0?
At either the firewall as the packets exit, or at the remote
Synopsis: udp checksum zero with inet6 rdr-to
Category: kernel
Environment:
System : OpenBSD 5.5
Details : OpenBSD 5.5 (GENERIC.MP) #315: Wed Mar 5 09:37:46
MST 2014
On Wed, Jul 16, 2014 at 03:38:36PM -0400, I wrote:
When using a pf rule to redirect incoming udp traffic to one
ipv6 address to a different address, the packet that is sent to
originating host has a 0 udp checksum. I'd guess some sort of
offload problem, but the interface isn't claiming