KVM Networking Hell

Alex Muntada alexm at alexm.org
Wed Jun 9 14:54:00 UTC 2010

+ Jamie McDonald <jmack at iclebyte.com>:

> You are correct, I cannot ping the gateway from the guest -
> however I can from the host.

Maybe the host is blocking traffic from the guest interface
with iptables? I used to add -i eth0 on every iptables rule
before trying kvm. If that's the case, you should remove
them or replace eth0 by br0.

On the other side, sniffing traffic on the host side should
help determining at least if packets arrive from the guest.
You can use tcpdump, wireshark, etc.

Alex Muntada <alexm at alexm.org>

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