Re: ICMP Ping being lost between kernel and the ping program. (Solved!)

[Jesse Gordon]

----- Original Message ----- 
"Jesse Gordon" <jesseg@xxxxxxxxxx> wrote:

> Subject: ICMP Ping being lost between kernel and the ping program.
>
> Greetings. This is my first post.
>
> I'm having a weird intermittent problem with ping.
>
> I'm pinging the WAN port of a cheap home DSL firewall (d-link di-604) and 
> sometimes the ping program fails to get a response,
> but if I run tcpdump I can see that the response is indeed coming back.
> .. snip ..
> -Jesse

Solved.

The Dlink firewalls were responding with stale ICMP Identifier when pinged a 
second time, and the ping program was ignoring the responses which had a 
stale Identifier.

The windows box always works because it always uses the same number for 
Identifier. Ugh.

Thanks!

-Jesse 


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