Thanks for the responses.

The Bering router is replacing a machine that was doing double duty as a file server and NAT router for the rest of the network to a DSL link. Previously the file server had three IP addresses, on one NIC it had an external address for itself and one for the rest of the network to NAT behind, the other NIC had an address for the other machines to use as a gateway.

The two addresses used for NAT have been moved to the Bering machine, where routing is now done, and I have verified that the file server machine no longer uses the two addresses that have been moved over to the Bering. I also checked with /sbin/ip neigh on a client machine, and only the Bering's MAC is listed for the gateway address. I don't think this is my problem, is there any other check to verify this?

At Luis Correia's suggestion, I turned off auto-detect of duplex on the NIC's. This seemed to make sense, one of the cards is connected to the hub on the back of a DSL router (half-dup, 10Mb) while the other two are connected to a Netgear switch (full-dup, 100Mb). However, this does not appear to have fixed my problem either.

Heres another thing I've noticed, the problem will appear separately for each client. On the DMZ I have two machines, A and B. A can't ping the Bering, but if I ping A from the Bering, after the first few packets it works. After this A can now ping the router. However, B still can not ping the router until I do the router->B ping. And this isn't always necessary, sometimes things just work.

Chris

Charles Steinkuehler wrote:

I've put together a router using Bering rc4, but it has a strange
startup issue.  Once the router is up and running, if I try and ping

it

from a machine on the interior network, it won't respond.  However, if

I

try and ping from the router to the machine on the network, the first
four packet fail and then it starts to work.  After that, the ping

from

the machine to the router works as well.

Does anyone have any idea what causes the interface to fail until it

has

been 'primed' like this?

Make sure you don't have overlapping IP addresses.  If two machines are
assigned the same IP, you can see behavior like this.

Charles Steinkuehler
http://lrp.steinkuehler.net
http://c0wz.steinkuehler.net (lrp.c0wz.com mirror)




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