Date: Fri, 22 Dec 1995 12:19:47 +1030 (CST) From: newton@communica.com.au (Mark Newton) To: nate@rocky.sri.MT.net (Nate Williams) Cc: hackers@FreeBSD.org, isp@FreeBSD.org Subject: Re: BSD networking code guru needed? Message-ID: <9512220149.AA14257@communica.com.au> In-Reply-To: <199512210116.SAA01444@rocky.sri.MT.net> from "Nate Williams" at Dec 20, 95 06:16:16 pm
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Nate Williams wrote:
> Here's what happens on my server box right now.
>
> ws1.sri.MT.net (204.182.243.100) at (incomplete)
> ws1.sri.MT.net (204.182.243.100) at 0:80:48:e8:27:63 permanent published
> ws1.sri.MT.net (204.182.243.100) at 0:80:48:e8:27:63 permanent published (proxy only)
Hmm:
newton@cleese> arp -a
cleese.apana.org.au (203.14.159.10) at 0:0:21:54:66:99 permanent
hal9000.apana.org.au (203.14.159.11) at 0:0:21:45:25:71
squish.apana.org.au (203.14.159.12) at 8:0:1:1:67:fd
delta.apana.org.au (203.14.159.129) at 0:0:21:54:66:99 permanent
delta.apana.org.au (203.14.159.129) at 0:0:21:54:66:99 permanent published
master.apana.org.au (203.14.159.130) at 0:0:21:54:66:99 permanent
master.apana.org.au (203.14.159.130) at 0:0:21:54:66:99 permanent published
saturn.apana.org.au (203.14.159.133) at 0:0:21:54:66:99 permanent published (proxy only)
marge.apana.org.au (203.14.159.137) at 0:0:21:54:66:99 permanent published
ros.apana.org.au (203.14.159.139) at 0:0:21:54:66:99 permanent published
vivi.apana.org.au (203.14.159.140) at 0:0:21:54:66:99 permanent published
nipnyep.apana.org.au (203.14.159.143) at 0:0:21:54:66:99 permanent published
traffix.apana.org.au (203.14.159.144) at 0:0:21:54:66:99 permanent published
conny.apana.org.au (203.14.159.146) at 0:0:21:54:66:99 permanent published
newel.apana.org.au (203.14.159.147) at 0:0:21:54:66:99 permanent published
shaea.apana.org.au (203.14.159.149) at 0:0:21:54:66:99 permanent published
riffraf.apana.org.au (203.14.159.150) at 0:0:21:54:66:99 permanent published
slammer.apana.org.au (203.14.159.151) at 0:0:21:54:66:99 permanent published
? (203.14.159.255) at (incomplete)
(FreeBSD 2.0.5-RELEASE)
That last entry bugs me a bit too: I've never seen any other system
trying to ARP for the broadcast address.
Each of those hostnames represents a dial-up SLIP site (using
/usr/sbin/sliplogin). I actually add proxy ARP entries for them at
boot time, using a shell script which goes through my slip.hosts file
and adds an ARP entry for each valid host.
delta and master seem to have the problem you describe above. saturn
seems completely different (read: inconsistent): It has been added
to the ARP table at exactly the same time as all the others, but it
shows up as "(proxy only)". Bizarre.
I think proxy ARP on FreeBSD is bogus :-)
The wierd thing is that when these hosts login they *work*. You're
seeing a manifestation of the problem which doesn't work; I'm seeing
one where it doesn't seem to affect operation (even though it's dead wrong).
What gives?
> This problem won't occur if the arp entries time-out on both the remote
> host and the server box. If that happens, then the proxy-arp entry
> which gets added by PPPD is the first in the arp table, and routing is
> correct until the line goes down.
Hmm - For PPP sites I use ijppp. The only permanent proxies in my ARP
table are for SLIP sites. I wonder if the thing that's stopping it from
working for you has something to do with the way pppd handles proxy ARP?
<sigh>
- mark
---
Mark Newton Email: newton@communica.com.au
Systems Engineer Phone: +61-8-373-2523
Communica Systems WWW: http://www.communica.com.au
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