Re: loss of arp entry during tftp exchange

["Richard C Ferri" <rcferri@us.ibm.com>]

Matt,
This might be totally irrelevant, but I had a problem with eepro100 not
long ago, and got help from the venerable Donald Becker himself.

The problem I saw was that the adapter broadcast its ethernet MAC address,
which was correctly answered by dhcp on the server.  Then, later during
install, the adapter on the client broadcast *a different* MAC address.
Yes, this card appeared to have two MAC addresses.  To get around the
problem, I put a second entry in /etc/dhcpd.conf, one for each of the MAC
addresses, and things went swimmingly after that.

You're no doubt wondering how an ethernet card has two MAC addresses, as
did I.  I posted to the eepro100 mailing list, and Donald Becker responded
that I had to pick up the latest ethernet device driver.   Apparently my
particular adapter had more memory than other eepro100 adapters, and as a
result the device driver read code (instructions!) instead of the actual
MAC address the second time.  You might check to make sure that the adapter
is broadcasting the same MAC both times.  If that isn't the case, I would
post to the eepro100 mailing list, to get advice from the eepro100 experts.
I think the address of the list is eepro100@scyld.com.  I think you just
send a note to majordomo@scyld.com with 'subscribe eepro100' in the body of
the note, and that should get you started.

regards, Rich

Richard Ferri
IBM Linux Technology Center
rcferri@us.ibm.com




"Matt Pearce" <matt@gimmel.com>@baghira.han.de on 12/12/2000 11:24:44 AM

Please respond to netboot@baghira.han.de

Sent by:  owner-netboot@baghira.han.de


To:   <netboot@baghira.han.de>
cc:
Subject:  loss of arp entry during tftp exchange




Wasn't sure whether to post this on netboot mailing list or linux-fai.

I am configuring pc to boot from dhcpd/bootp server and boot 2.2.17 kernel
with the intention to use Thomas Lange's fai package.  However the
installimage file is too big for a tftp transfer.  So I tried compiling a
smaller kernel image.

I made a zImage of the kernel and did a :
mknbi-linux -k zImage -o bootImage

When I boot the client pc (which has Intel EtherExpress/pro100b) it picks
up
and IP address okay, but immediately after initiating tftp transfer the
server loses the arp entry of the client pc.  I tried both from dhcpd and
bootp.

Debugging bootp from within tcp wrappers shows that "someone wants tftp"

tcpdump shows a tftp request from the client.

Also syslog shows that the client finds the file bootImage okay.

What am I doing wrong here?


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