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 From:  Joe Lagreca <lagreca at gmail dot com>
 To:  Monowall List <m0n0wall at lists dot m0n0 dot ch>
 Subject:  Re: Curious IP conflict problem
 Date:  Tue, 17 Aug 2004 11:10:50 -0700
I might have found my problem which may be a good laugh for some of
you.  I had proxy ARP turned on for xx.xxx.xxx.146-149.  I just turned
it off, and my problem has dissapeared as well as the IP conflict.

I found this while looking through my xml config file.  

Pretty stupid of me, I hope someone got a laugh out of it.  Thanks for


On Tue, 17 Aug 2004 10:58:07 -0700, Joe Lagreca <lagreca at gmail dot com> wrote:
> Here is my network info:
> CPE Computer IP range first address:    xx.xxx.xxx.146
> CPE Computer IP range last address:     xx.xxx.xxx.150
> CPE Computer subnet mask:      or /29
> CPE Computer default gateway:           xx.xxx.xxx.145
> Network description:
> CPE --> 8 port HUB
>                             --> netgear router WAN --> internal network
>                             --> m0n0 WAN --> internal 192.168.1.x network
>                             --> PC for testing with public IP
> I'm currently having WAN network latency issues and have been trying
> to troubleshoot.  For testing I have been trying to take a computer
> from my LAN, assign it one of my external IP's and plug it in to the
> WAN HUB where the m0n0 WAN is plugged in (I need to eliminate the
> possibility of the m0n0 as being the problem).
> However I am running into an IP conflict problem, and can't seem to
> figure it out.  My m0n0 WAN is xx.xxx.xxx.146.  I also have another
> client using xx.xxx.xxx.150.  When I try to assign xx.xxx.xxx.147-149
> to my PC and plug it into my hub I get an IP conflict error.
> My m0n0 should only be using one IP, however it seems as if it may be
> using more than one.  (Side note: I was playing around with 1:1 and
> server NAT a week or two ago, but have since deleted all of the
> mappings.)  When I unplug the m0n0 from my WAN HUB and then plug in my
> PC with an external IP address it works just fine.  However if I don't
> unplug my m0n0 I get an IP conflict message.  How should I go about
> troubleshooting this?  How can I tell for sure if my m0n0 is using
> more than one IP?
> Thanks for the help!