Re: [Qemu-discuss] Port-forwarding to a QEMU/KVM VM

[Jaap Winius]

Quoting Jakob Bohm <address@hidden>:

> Check the following:
....
> If you have a spare machine with two ethernet ports, configure
> it to bridge the two ports with brctl and run wireshark on that,
> then "splice" it into the connection between your machine and the
> physical switch, then again between the physical switch and the
> gateway.  Look if the packets are dropped on one side of the
> physical switch or the other. ...

I first tried sniffing on the gateway-side of the switch, but just saw  
the same thing. Then I did it on the server-side... and there saw that  
the reply packets were making it out of the bridge! After that I  
discovered the root cause of the problem: the default gateway on the  
VM was still pointing to the wrong address. That was why the internal  
tests were working, but not the external one. So, problem solved.

Thanks for your help!

Cheers,

Jaap