[openib-general] help with ifconfig output from ipoib

[Ira Weiny]

One of my coworkers brought a problem to me which I need guidance from you guys
on.

He pointed out that the HW address for the ipoib interface in ifconfig reported
all 0's.

11:12:50 > /sbin/ifconfig ib0
ib0       Link encap:UNSPEC  HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00  
...

I tracked this down using strace to be a difference in the redhat kernel vs the
latest 2.6.14 kernel.  The SIOCGIFHWADDR ioctl in redhats 2.6.9 kernel will
return EOVERFLOW if the sa_data area is too small.  This seemed like an easy
enough fix.  Change the behavior of the SIOCGIFHWADDR.

I did this and this is what I got.

# ldev6 /root > /sbin/ifconfig ib0
ib0       Link encap:UNSPEC  HWaddr 00-00-04-04-FE-80-00-00-00-00-00-00-00-00-00-00  

This is not the GUID of the node?  More digging revealed that this "should"
work.  Am I incorrect in assuming that the HW address should be the node GUID?
Does this work for others?

Thanks,
Ira

PS. Sorry about the premature email before.