I have two Linux (Ubuntu 12.04) VM (running on KVM) that networked together using two Linux bridges as shown above. The network interfaces are Linux TAP devices.

The problem that I am facing is that when I ping from one host to another I see the following

root@ubuntu1204-template:~# ping

PING ( 56(84) bytes of data.

64 bytes from icmp_req=1 ttl=64 time=1.12 ms

64 bytes from icmp_req=1 ttl=63 time=1.13 ms (DUP!)

Any idea what am I doing wrong ?

I installed arping on the Linux vms and arping does not seem to exhibit this problem.

  • Could you please show your br0's detail configuration ? – user279577 Apr 2 '15 at 1:25

I removed the PROMISC attribute from the bridge and that fixed the problem

ifconfig br0 -promisc

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.