Loss connection to router, not to others connected to router

[dcomartin]

#1 - I have a DLINK EBR-2310 running on 192.168.1.1

#2 - I have a machine running FC4 that is connected to a switch. The switch is connected to a DLINK EBR-2310. IP: 192.168.1.2

#3 - I have another machine WinXP connected directly to the DLINK router. IP: 192.168.1.3

#4 - I have another machine Win98 connected to the same switch as #1. IP: 192.168.1.4

Here is the issue:

My FC4 box (#2) will out of no where, will lose its connection/route to the DLINK router. It cannot ping the the DLINK router (#1). However, it can ping #2, who is directly connected to it the DLINK router. And at the same time, #4, who is connected the same way as #2 can ping the DLINK router (#1).

This makes no sense to me what so ever. The only machine on my entire network that seems to lose a connection to the DLINK router is my FC4 box. I'm sure that there are no IP conflicts because I know no other machine is using 192.168.1.2

The onlyway I can get the FC4 box to ping the DLINK router is by rebooting the router. Thats it.

Any ideas/suggestions?

[framp]

Did you check your /var/log/messages for connection failure messages?