YanVugenfirer/kvm-guest-drivers-windows — Issue #1: Big problems with tcp offload
Author: guilhem
Created: 2012-02-08 15:37:37+00:00
State: open

I use KVM in my company with a mix Linux/WIndows.

I use them with vhost_net, bridge and/or macvtap.

Problems com with macvtap on Windows :
without any management of tcp offload :
1) Windows reject any paquet send from another another on the same host (and in macvtap too). (can be correct by a tricky rule in iptables... but it's quite awful
2) More painful, when GRO is activated on host, ALL packets are dropped by windows...