Date: Tue, 18 Sep 2001 17:01:34 -0700 From: "Anuranjan" <anu@nttmcl.com> To: "'Mike Saunders'" <method@method.cx>, <freebsd-net@FreeBSD.ORG> Subject: RE: kernel arp messages Message-ID: <001501c1409e$3f5acbd0$f64545d8@ntt27f48otgmw8> In-Reply-To: <Pine.NEB.4.21.0109181834310.7645-100000@schizo.method.cx>
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I recently came across the same prblem myself. You're facing it because of
the same subnet mask on your cards. In freeBSD if you configure two cards
on the same subnet the kernel gets confused as to which card is the gateway
to the router. THe kernel seems to make this decision based on the fact
that if you want to configure two cards on the same machine you want to use
it as a gateway between two different networks/subnets.
--A
-----Original Message-----
From: owner-freebsd-net@FreeBSD.ORG
[mailto:owner-freebsd-net@FreeBSD.ORG]On Behalf Of Mike Saunders
Sent: Tuesday, September 18, 2001 4:45 PM
To: freebsd-net@FreeBSD.ORG
Subject: kernel arp messages
Hello!
I'm hoping somebody can help me with this problem. I'm about at my
wit's end. The problem is that i'm receiving the following messages
constantly, at the console, in the syslog, and to root's terminal.
Sep 18 15:01:54 router /kernel: arp: 209.74.92.1 is on xl0 but got reply
from 00
:00:a2:66:83:41 on ep0
Sep 18 15:01:54 router last message repeated 4 times
Sep 18 15:01:54 router /kernel: arp: 209.74.87.1 is on lo0 but got reply
from 00
:60:08:35:57:4e on xl0
Sep 18 15:01:55 router last message repeated 2 times
Sep 18 15:01:55 router /kernel: arp: 209.74.87.193 is on ep0 but got reply
from
00:50:da:c7:e7:68 on xl0
Sep 18 15:01:55 router /kernel: arp: 209.74.87.1 is on lo0 but got reply
from 00
:60:08:35:57:4e on xl0
I'm running a 3.4-RELEASE i386 machine with two network cards. The
machine acts as a router between my LAN and my provider's network. ep0 is
the NIC connected to my LAN and xl0 is my provider's network.
Here's my network configuration:
bash# ifconfig ep0
ep0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet 209.74.87.1 netmask 0xffffff00 broadcast 209.74.87.255
ether 00:60:08:35:57:4e
bash# ifconfig xl0
xl0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet 209.74.92.209 netmask 0xffffff00 broadcast 209.74.92.255
ether 00:50:da:c7:e3:1a
media: 10baseT/UTP <half-duplex>
my /etc/rc.conf looks like this:
ifconfig_xl0="inet 209.74.92.209 netmask 255.255.255.0"
ifconfig_ep0="inet 209.74.87.1 netmask 255.255.255.0"
hostname="router.cland-minot.com"
gateway_enable="YES"
defaultrouter="209.74.92.1"
I tried to enable arpproxy_all="YES" in /etc/rc.conf, but that's
not helping, I still got spammed by all the arp messages. With the new
IIS exploit causing such increased traffic flow, the arp messages are
making console useless by filling the screen as well as lagging the system
horribly by churning the disk so much (It's only a pentium 60). I can't
even log into the machine via ssh. The only way to get a shell on it is
to pull the network lines and use the console.
So, in short, besides redirecting console and syslog to /dev/null,
what can I do to make these arp messages go away?
Thanks!
-Mike Saunders
method@method.cx
Network Administrator - cland-minot.com
msaunders@cland-minot.com
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