Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

i have four suse linux servers siting on different lan. they are connected by a router and it is configured to allow these machines to ping one another.

default routings have been added to all these machines. the problem is: 1) machine A can ping to machine B and D 2) machine B,C and D can ping to machine A why can't machine A ping C?

I troubleshoot by setting up machine E on the same lan as machine A, and set machine A ip address on machine E (disabled machine NIC card during this test). i was able to ping machine B,C and D on machine E.

they are not sitting behind any firewall. i have flush all ip tables for these machines. i have turned off all OS firewall.

share|improve this question
What are the subnets of the machines ? – Ofiris Feb 1 '13 at 16:33
machine A and E are in 10.6.10; machine B is 10.6.20, C in 10.6.30 and D in 10.6.40 – nuttynibbles Feb 2 '13 at 0:30

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.