[U-Boot-Users] U-Boot not responding back to ARP requests?
Robin Getz
rgetz at blackfin.uclinux.org
Sun Sep 26 22:29:09 CEST 2004
All:
I was doing some debugging of some networking issues I am seeing, and saw
something that I thought was strange. I am seeing the following:
If I set things up as U-Boot = 192.168.0.3 and cross over cable to U-boot
on 192.168.0.2
From U-boot, if I ping 192.168.0.2
The ethereal dump is something like:
U-Boot Broadcasts -> Who has 192.168.0.2? Tell 192.168.0.3
Server Reply -> I do (192.168.0.3 is at aa.bb.cc.dd.ff.gg)
U-boot IMCP -> ping request
Server IMCP -> ping reply
And now U-boot stops, and goes back to the command prompt. (like it should)
Now the Server starts asking:
Server Broadcasts -> who has 192.168.0.3? Tell 192.168.0.2
Server Broadcasts -> who has 192.168.0.3? Tell 192.168.0.2
Server Broadcasts -> who has 192.168.0.3? Tell 192.168.0.2
It does that three times (once a second) every time that it sees a packet.
My question is - shouldn't U-Boot respond? I don't see it in the code (I
see the rarp handler, but not a arp handler).
My problem is that I have many U-boot boards on the same network, and the
network is being flooded with ARP traffic, as the routers try to figure out
the U-Boot MAC<->IP associations.
Thanks
-Robin
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