Thanks Stuart. This is a KVM virtual machine with all offloads settings disabled for the guest ... I will try to enable and see how it goes ...
-- Regards, C. L. Martinez On 15/03/2020, 17:41, "owner-m...@openbsd.org on behalf of Stuart Henderson" <owner-m...@openbsd.org on behalf of s...@spacehopper.org> wrote: On 2020-03-15, Carlos Lopez <clo...@outlook.com> wrote: > Good morning, > > I've been seeing a lot of "bad ip cksum" error messages in my OpenBSD’s Tor gateway, like these: from the tcpdump manual: IP and Protocol Checksum Offload Some network cards support IP and/or protocol checksum offload. Packet headers for such interfaces erroneously indicate a bad checksum, since the checksum is not calculated until after tcpdump sees the packet.