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On 1/19/2013 8:57 AM, Charles Steinkuehler wrote:
> I've setup Michael Haberler's network booting of my BeagleBone, and
> I seem to be having the same network crashing on DHCP lease
> renewal issue others have seen.
> 
> Has anyone identified and resolved the issue, or just worked around
> it?

Update:
Given the way the system behaved, I suspected an issue with dhcp lease
renewal, which appears to be the case.

I created a new SD card with Michael's TFTP/NFS boot partition, but
with the rootfs on a second partition (unused by default).

Once the system network booted, I logged in via ssh and started a
simple while loop (running 'uptime' every 5 seconds).  In the
USB/serial console, I mounted the SD card rootfs and chrooted to it.

After a bit more than 4 minutes, the network went down, taking my ssh
console with it.  The chroot was still alive, and showed that eth0 no
longer had an IP address.  Manually assigning an IP address to eth0
restored full functionality, even the ssh terminal came back alive,
although it 'skipped' several of the 5-second intervals when it was
blocked waiting for the network.

I suspect this may be an Ubuntu issue, but regardless it does not
appear to be a fundamental problem with the ARM kernel or the 'Bone.

I have not yet tried to debug the lease renewal problem.  First I'll
probably see if a Debian install behaves the same way.  If so, I'll
likely try to get to the bottom of the problem.  If not, I'll chalk it
up to those wacky Ubuntu folks, and go back to Debian (or work-around
the issue by running off the SD card if I need to stick with Ubuntu).

- -- 
Charles Steinkuehler
[email protected]
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