[gentoo-user] dhcpcd won't run at certain network points

[Alan McKinnon]

Hi all,

Why am I always the one to get the wierd hardware issues? Here's my 
latest. The powers that be at work made me move my desk, and dhcpcd on 
*this* laptop doesn't work at *this* network point, or any of the other 
four in this row of desks, althought hey work OK on Windows. It's most 
certainly a cabling issue, I can go to the server room and plug a 
flylead into the *same*port* on the switch and it all works right. A 
static ip isn't an easy option as I move between different networks and 
don't want to have to keep editing resolv.conf. I'm not allowed to do 
my first reaction, which is to swap my outlet with a working one...

tcpdump shows me this when I insert the network cable:
16:11:06.855229 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, 
Request [|bootp]
repeated 6 more times then it times out

With a static ip, I do get full bandwidth, error free, just like it 
should be. So whatever this cabling issue is, it affects only bootp...

hardware: Dell Latitude D810:
NIC: 02:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5751 
Gigabit Ethernet PCI Express (rev 01)
kernel module: tg3
kernel version: 2.6.20-gentoo[-r1]
/etc/conf.d/net: empty (i.e. default)

I would use google, if only I could think of a remotely meaningful 
search string :-) The hdcpcd docs and kernel module docs are not very 
enlightening. And the DHCP server is a Windows domain controller.

Anyone know of a dhcpcd or tg3 module option that will provoke this 
network to give me what it should?
-- 
Optimists say the glass is half full,
Pessimists say the glass is half empty,
Developers say wtf is the glass twice as big as it needs to be?

Alan McKinnon
alan at linuxholdings dot co dot za
+27 82, double three seven, one nine three five
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