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Re: Trouble routing with icmp-redirects
- To: misc_(_at_)_openbsd_(_dot_)_org
- Subject: Re: Trouble routing with icmp-redirects
- From: Alexander Bochmann <ab_(_at_)_lists_(_dot_)_gxis_(_dot_)_de>
- Date: Tue, 5 Oct 2004 15:05:46 +0200
...on Mon, Oct 04, 2004 at 05:02:35PM +0200, Raphael Mueller wrote:
> >Did you check wether your OpenBSD gateway still
> >sends ICMP redirects at all?
> Yes, icmp-redirects go out, see text-only output of Ethereal further
> down. I noticed that there is a header checksum which is wrong (Ethereal
> sais so) in that packet. The packet of the Cisco router has a correct
> check sum.
Oops. That would explain why the clients ignore
those redirects, but I have no idea where the
checksum error should originate from.
> #### See next line for incorrect header ####
> Header checksum: 0xaf32 (incorrect, should be 0xb032)
Hum, a difference of 0x100: One could have
speculated on a strange memory error or
something, but that's a lot of wrong bits...