[Netkit.users] TAP interface & masquerade

Cyrille OLIVIER cyrilleo at hotmail.com
Thu Jul 9 13:43:37 CEST 2009


I try to setup a TAP interface.

vstart r1 --con0=this --eth0=tap,, => OK, r1 boot successfully.

So, inside r1: eth0=

The host PC has a real network-interface eth0=

To reach internet, the next-hop is the in another PC.


In the host PC, ping is OK. ping is OK.

Inside r1 vm: ping is OK. but ping is NOK :(


In the host PC, I check: 

- /proc/sys/net/ip4/ip_forward is 1 : OK

- iptables -L does not display the masquerading in postrouting chain(result of 'iptables -t nat -A POSTROUTING -j MASQUERADE') but its seems OK.


Any idea why ping from VM to external gw is NOK ?



Best regards to all,






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