Satish Patel <satish....@gmail.com> wrote: > > [84166:59495417] -A POSTROUTING -p tcp -m tcp --sport 80 -j CHECKSUM > > --checksum-fill > > [68739:5153476] -A POSTROUTING -p tcp -m tcp --sport 8000 -j CHECKSUM > > --checksum-fill
These rules make no sense to me, and are also source of your backtrace. Who set this up? If this is coming from openstack, I suggest asking openstack developers WTH this is supposed to do. > > [755:275452] -A POSTROUTING -s 10.0.3.0/24 -o lxcbr0 -p udp -m udp > > --dport 68 -j CHECKSUM --checksum-fill This was needed to work around dhcpd issues w. checksum offloading but I guess that DCHCP will work fine without this rule too nowadays. So I suggest you simply get rid of these rules.