[Planetlab-users] vnet tap

[Mark Huang]

Samuel Lucas Vaz de Mello wrote:
> Hum... I think that the problem should be the local source address. When I 
> change the source/destination, the source becomes the remote address.

No, this shouldn't matter. In addition to recomputing both the ICMP and 
IP checksums, also swap the Ethernet addresses as well. I've checked in 
an example TUN/TAP ping responder:

http://cvs.planet-lab.org/cvs/vnet/examples/tunping.c

Try it out and let me know.

--Mark
PlanetLab Operations