I've installed a number of Bering 1.2 systems all connected by Ipsec VPNs 
and they work fine. All including the "strange" one are quite similar. 
While migrating yet another system from Dachstein to Bering I've 
encountered a couple of strange things and wondered if anyone had any 
ideas what might be going on. 

The LEAF system in question is a simple firewall/VPN gateway with only two 
NICs. It has a cable modem on eth0 and a switch connecting a handful of 
PCs on eth1. 

The first strange thing that happened was that the NICs swapped device 
IDs. What was eth0 became eth1 and vice versa. I always thought that which 
NIC became eth0 was BIOS dependent not kernel dependent. The swap did not 
present a big problem, it is just a curiosity. Has anyone else seen this 
happen when going from Dachstein 1.02 to Bering 1.2?

The second strange thing is a  problem. Please understand that this system 
ran months under Dachstein with no failures, and switching back to 
Dachstein makes the problem go away. It seems that every time any kind of 
load is placed on the system (say a 10 meg download), the inside NIC, eth1 
a (3Com 3c509),  stops responding. If the load stays low, the system runs 
normally. Do an FTP or pull something of any size down from the Web and 
eth1 goes away.  I have looked in very log file and I can find no error 
messages.

 When the problem happens I can not access the LEAF eth1 interface from 
any of the PCs, nor can I ping any of the local PCs from the LEAF console. 
While eth1 is down eth0 is up and running. From the LEAF console I can 
ping the Internet and hosts over the VPNs, I continue to be able to 
collect SNMP data from the LEAF across the VPN. In short everything seems 
to be working just as it should except eth1 is dead..
 
In trying to fix the problem I have tried the usual things. I have tried 
shutting down and restarting eth1 with ifconfig, done a network restart, 
restarted Shorewall, everything I could think of that might be the 
problem. Nothing brings back eth1. The only thing that seems to work is a 
reboot. I am at the point of grasping at straws on this one. 
 
If anyone on the list has seen this before, or can tell me where to start 
looking, or what tests to perform to provide the list with more useful 
information, please let me know.

Best Regards,
Roger McClurg



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