Server Fault is a question and answer site for system and network administrators. Join them; it only takes a minute:

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

Can anyone explain why when I ping it gives me a reply from

Then If I ping .23.19 I get a request timed out reply. But I can RDP onto .23.19 These are virtual machines.. Does that make a difference?

share|improve this question
What is OS you're running ping on? – poige May 4 '12 at 10:02
Windows. Thanks Poige - Never even thought of octal numbering. – Axle May 4 '12 at 11:09
up vote 7 down vote accepted

As poige hints, 019 is a messed up octal way to say 17. 010 = 8, add 9 to that you get 17.

So when you ping .019, you accidentally ping .17

share|improve this answer
Thanks you very Much – Axle May 4 '12 at 11:08
@Axle, Actually, it's not just messed but rather totally weird. iputils' (GNU/Linux) ping won't even ping such host with error diag: unknown host That's why I asked you bout OS you've noticed this on. – poige May 4 '12 at 12:14

ping is incorrect, I suspect, since 0nn means octal number and 9 isn't octal allowed.

share|improve this answer
Thanks you very Much – Axle May 4 '12 at 11:08

Most probably .23.19 doesn't respond to ping, so it just drops the packets, that would explain the timeout and why you can RDP to it.

share|improve this answer
Thanks. Would this be a firewall stopping it? – Axle May 4 '12 at 11:01
Most probable... – Silviu May 4 '12 at 12:16

Your Answer


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

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