mtu issue with tg3 in anaconda-11.1.2.87 for centos 5

[Paul Armor <parmor gravity phys uwm edu>]

Hi,
we're trying to kickstart centos 5 on machines with broadcom 5704's, 
using jumbo mtu's (mtu=4500).

We're setting the option mtu=4500 which is being passed to the kernel by 
pxelinux, and then we also set mtu=4500 in the ks.cfg.

Perhaps I'm looking in the wrong place, but from looking at 
loader2/loader.c, I think we're doing things properly (this worked with 
FC4's anaconda, but is failing in Cent5).


If I set it to dhcp in the pxelinux config file AND set the mtu=4500, it 
dhcp's, but forgets the mtu.  If I set a static IP/netmask/mtu in the 
pxelinux config file, it works as expected.

Is this to be expected?  Is this a bug?

Thanks,
Paul