[Bug 792] nf_conntrack keep updating incorrect entry in conntrack table after default routing changed

[bugzilla-daemon at bugzilla.netfilter.org]

http://bugzilla.netfilter.org/show_bug.cgi?id=792

--- Comment #2 from Bruce <wjguo.netfilterbug at cs.nctu.edu.tw> 2012-06-15 05:50:49 CEST ---
Dear Pablo Neira Ayuso:

I'm sorry that I'm too late to reply you.
You are right. I forget to observe ID number in ICMP protocol.

I just tried on Windows and Linux (busybox).
In Windows, it always uses the same number as ICMP's ID, so it hits the old
record and then the ping fails.

In Linux, the implementation of busybox ping uses getpid() as the ID.
So, I execute ping and ctrl + ^D many times. Sometimes I get the same pid of
ping or the different pid. When I get the different pid, executing ping is
successful.

So, usually only Windows has this issue. 
Thanks for help. :)

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