Bert, Here's a little diagram: > > I N T E R N E T > / \ > ------------- ------------- > | 10.4.44.1 | | 10.4.44.2 | > | lucent | | speed | > ------------- ------------- > port-fw 10.4.44.12:80 port-fw 10.4.44.11:80 > \ / > \ / > \ / > ----------- > | hub | > ----------- > | > | > | > eth0 > -------------- > | 10.4.44.11 | > | 10.4.44.12 | > | linux | > -------------- So basically what I want is that for packets coming in from 'speed' to use speed as the outgoing gateway. Looking at incoming packets on the linux box, I see that when the router does port forwarding, it doesn't rewrite any addresses -- the packets are still from the remote client and destined for the linux box. The reason I had 'to' in my rule (and two IPs on the linux box) is so I could differentiate traffic from each router -- traffic going to 10.4.44.11 has to be from the 10.4.44.2 router. The 'from' address was always different (the remote client). I thought using mac addresses would be easier, but last time I asked, I was told IPs were easier ;) I have looked at the adv-routing howto and searched newsgroups, but haven't found a way to specify rules and routes with mac addresses. I tried this: ip rule add from 00:01:02:03:04:05 dev eth0 table speed but got an error: "an inet prefix is expected rather than "00:01:02:03:04:05". Is there an option to ip that signifies addresses are mac addresses? thanks for the help! Ross -----Original Message----- From: lartc-admin@xxxxxxxxxxxxxxx [mailto:lartc-admin@xxxxxxxxxxxxxxx]On Behalf Of bert hubert Sent: Thursday, December 20, 2001 1:57 PM To: Ross Simpson Cc: Lartc@xxxxxxxx Ds9a. Nl Subject: Re: [LARTC] adv. routing features not working? On Thu, Dec 20, 2001 at 02:50:06PM -0800, Ross Simpson wrote: > Hello, > > I posted here a couple of weeks ago with problems trying to specify and use > multiple gateways. > > Got lots of good advise, but I had a little OS trouble. > So I've finally upgraded to 2.4.9, and made sure that the correct options > are compiled in (adv. router, policy routing, etc.) Can you draw a picture of your situation, and where exactly you entered the commands you show? > IP to forward to). I would like incoming requests to be serviced, and then > returned on the gateway it came in on. 10.4.44.1 is currently the default > gw, and all packets coming in are leaving via it. 10.4.44.2 is the other > router. > 10.4.44.11 and .12 are the two IPs (one virtual) for the linux box. > > I added the rule: > ip rule add to 10.4.44.11/24 dev eth0 table speed I think you should change 'to' to 'from'. If that doesn't help, check the mac address of packets! A packet that is routed is only sent to a mac address, the destination IP address isn't changed! Regards, bert -- http://www.PowerDNS.com Versatile DNS Software & Services http://www.tk the dot in .tk Netherlabs BV / Rent-a-Nerd.nl - Nerd Available - Linux Advanced Routing & Traffic Control: http://ds9a.nl/lartc _______________________________________________ LARTC mailing list / LARTC@xxxxxxxxxxxxxxx http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://ds9a.nl/lartc/
