Is it normal for ifconfig to display all 0's for the MAC address of an OSA
interface?


eth0      Link encap:Ethernet  HWaddr 00:00:00:00:00:00
          inet addr:172.16.64.3  Mask:255.255.255.248
          inet6 addr: fe80::200:ff:fe00:0/64 Scope:Link
          UP RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:108 errors:0 dropped:0 overruns:0 frame:0
          TX packets:84 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100
          RX bytes:7049 (6.8 Kb)  TX bytes:8619 (8.4 Kb)


Will this cause problems for the ARP tables/cache of the Cisco router to
which the card is plugged?  For instance, I am able to connect directly to
the Linux machine over this interface but anything I try to route through
the machine (192.168.x.x) won't work.  Using tcpdump to monitor the traffic
going over the interface verifies that traffic that should be forwarded by
the Cisco router is not.

Strangely, on the same machine after taking down the QDIO interface, I can
bring up a second OSA using LCS, configure it with the IP of the QDIO card
and everything routes to the 192.168.x.x machines just fine.

Maybe I'm missing some maintenance or an OCO patch?

Oh, and by the way, the LCS card, although configured 100Mb/Full Duplex
won't get over 10Mb. -- ?  The LAN to which it is connected is 100Mbit/Full
as well.

The Linux machine is a SLES8 guest under VM with the OSA dedicated to it.

Matt Lashley
Idaho State Controller's Office

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