On Sat, Feb 03, 2007 at 03:31:08PM -0500, J. Alfred Prufrock wrote: > Hi guys, > > I recently switched ISPs, and my new ISP (Time-Warner) gave me a > Motorola SBG1000 cable-modem box. My OpenBSD machine, which used to > connect directly to my old ISP's servers, is now behind this box. I'm > running a GENERIC 4.0 kernel which has never had any problems with my > hardware.
Yeah, I've got one of those or similar. I'm using it with openbsd doing firewalling and NAT. > My problem now is that every fifteen minutes I get the following > message on my console as well as in /var/log/messages: > Feb 3 15:13:58 rock /bsd: arplookup: unable to enter address for > 24.aaa.bbb.ccc > > 24.aaa.bbb.ccc is the SBG1000's WAN address. Its LAN address is > 192.168.0.1, and my OpenBSD machine's address on the attached NIC > (dc0) is 192.168.0.10. This machine functions as my LAN router and > firewall, so it has another NIC (fxp0) whose address is 192.168.1.11. > > After looking around on misc, I tried the following: > arp -s 24.aaa.bbb.ccc 00:11:22:33:44:55 pub > where 00:11:22:33:44:55 is the MAC address of the Motorola box's > WAN-facing NIC. This gives me: > cannot intuit interface index and type for 24.aaa.bbb.ccc > I don't really know arp, so I'm wary of poking around any further. > I also tried getting the Motorola box not to do NAT, so my machine > then gets its IP address directly from the ISP's DHCP server instead > of the Motorola box's DHCP server. I still get the same message, but > with a different IP address (10.something). My setup goes like this: modem --> obsd (xl0) --> LANs (xl1 and xl2) on obsd I have in hostname.xl0 just the following: dhcp none none none I made sure NAT and DHCP was turned off the modem via the web interface. And, as far as getting the obsd box to talk to the modem was concerned, that's it! There is other stuff involved in getting the box to talk to the lan and v/v. I found it useful getting just the box to work with the modem, it's not clear in your message if that is also your situation. -- John
