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Date:      Tue, 24 Nov 1998 13:26:31 +0100 (MET)
From:      Luigi Rizzo <luigi@labinfo.iet.unipi.it>
To:        alden@math.ohio-state.edu (Dave Alden)
Cc:        freebsd-net@FreeBSD.ORG
Subject:   Re: bridging hints?
Message-ID:  <199811241226.NAA05659@labinfo.iet.unipi.it>
In-Reply-To: <19981123133825.A5023@zaphod.mps.ohio-state.edu> from "Dave Alden" at Nov 23, 98 01:38:06 pm

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> That's what I'm trying to do.  :-)  What I meant by "client" was that I
> set "firewall_type" to "client" in rc.conf.

> It doesn't make a difference.  I've gotten a little bit further.  Here's my
> setup:
> 
>     Hub_1
>     |   |
>     A  Hub_2
>        | | |
>        B C D
>            |
>            E
> 
...
> If I telnet from B to E, I get the following syslog'ed on D:
> 
> Nov 23 13:04:54 D /kernel: ipfw: 100 Deny TCP B:1114 E:23 out via fxp1
> 
> Which is what I'd expect.  If I telnet from C (or A) to E, I get the
> following syslog'ed on D:
> 
> ipfw: 200 Accept TCP C E out via fxp1 Fragment = 64
> ipfw: 200 Accept TCP C E out via fxp1 Fragment = 64
> ipfw: 200 Accept TCP C E out via fxp1 Fragment = 64
> ipfw: 200 Accept TCP C E out via fxp1 Fragment = 64
> Nov 23 13:06:23 D /kernel: ipfw: 200 Accept TCP C E out via fxp1 Fragment = 64
> 
> I ran snoop (Solaris packet sniffer) and as far as I can tell, the packets
> coming from C (and A) are not fragmented.  Have I misconfigured something?
> Any ideas?  Help?  :-)

it is really curious that B and C behave differently. Do you have a
tcpdump/snoop output to see what options are carried by the packets ?

	luigi
> ps  I'm running 2.2.7-stable -- should I be running 2.2-current?

there is no 2.2-current, -current is on the 3.0 branch and there is no
bridging in that branch (yet)

	luigi

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