Re: [lwip-users] ARP Request breaking Telnet traffic

[Pomeroy, Marty]

>>  From your trace I'd say you have the following devices in your
Network:
>>   172.16.1.7 is the lwIP device
>>   172.16.1.34 is your PC
>>   172.16.1.11 a Zyxel device (Router or similar)

Minor correction to above - that the Zyxel device starts on a different
subnet - 172.16.0.11 in Packet 16 and changes to IP 172.16.1.7 in Packet
20.

You have at least three devices claiming IP Address 172.16.1.7:
Packet 13 Src: 02:81:00:01:d4:c1 (02:81:00:01:d4:c1), This is the
original
Packet 17 Src: 02:81:00:01:d5:00 (02:81:00:01:d5:00)
Packet 20 Src: ZyxelCom_09:93:16 (00:23:f8:09:93:16), 

Topology questions: do you have multiple routers active, giving out
172.16.1.7 to different devices (been there, done that!)?  They may be
separated by switches which perhaps keeps them apart for a while, but
ARPS are passing through?  If you completely isolate your test
topography, this problem should go away.

In any case, when duplicate IPs happen, the network becomes hopelessly
confused!

Marty