[realtek] problem with dual RTL8139 boards

[John A Ogren]

Donald,

Thanks for the lightning-quick reply!  I really appreciate your 
willingness to help out.

> What motherboard type?


It's a no-name box with a no-name motherboard, and the vendor didn't 
even give me a manual.  It's a small ATX board.  The only identification 
that I can see is "PSF 103", plus an "Award" sticker on a ROM.


> Have you read the manual about bus-master limits?  Some A-bit
> motherboards share the bus-master pins between two adjacent slots.


No manual, sigh.  I'm not familiar with bus-master limits.  I tried two 
slots that were not adjacent, though, and that didn't help.


> It's more likely that you are misinterpreting the symptons, and actually
> have a routing problem.


It would make my day if it were that simple.  Here's my routing table 
for a configuration that can ping machines on the 192.168.1.x net:

Destination Gateway Genmask       Flags Metric Ref Use Iface
192.168.1.0 *       255.255.255.0 U     0      0   0   eth1
192.168.0.0 *       255.255.255.0 U     0      0   0   eth0
127.0.0.0   *       255.0.0.0     U     0      0   0   lo


If I change the ifcfg-eth? files so that eth0 points to the local net, I 
get this routing table, and can't ping machines on the 192.168.1.x net:

Destination Gateway Genmask       Flags Metric Ref Use Iface
192.168.0.0 *       255.255.255.0 U     0      0   0   eth1
192.168.1.0 *       255.255.255.0 U     0      0   0   eth0
127.0.0.0   *       255.0.0.0     U     0      0   0   lo

 From all the howto's and web postings that I've read, these routing 
tables are correct for my configuration.  But this is the first time 
I've tried to set up two Ethernet cards in the same machine, so I may 
have misunderstood something.

Thanks again for your help,
John