That of course is true on one hand. But
on the other hand, I wanted to test in a "real" network, where
there is also "foreign" traffic. But I should have retested it in
a separate network.
Thanks again
Daniel
Glad we could help. Still I'm a bit puzzled, why the
ZyWall also
resets a connection based on the same IP (172.16.1.7) in Frame
20...
A final recommendation based on my own experience: Invest some
bucks
in a second NIC for your PC and always create a separate network
for
your development devices. This avoids such bad coincidences and
avoids
side effects during your tests.
There are some neat USB NICs by Trendnet you can by for little
money.
Regards
Ueli
Quoting Daniel < [hidden email] >:
> Thank you both, Ueli and Bill
>
> Of course you're right, I should have provided more
information. Sorry,
> first time poster in lwip.
>
> Your assumptions about the IPs are right. 172.16.1.11 is a
ZyWall.
>
> Your hints just helped me a lot. I asked myself what could
trigger my device
> to change the MAC - but had no clue. Then I looked closer
at the MAC
> addresses. Our devices use their serial number as the last
digits in the
> MAC.
> The MAC which was used before the problems, was the serial
number of my
> controller as expected. The latter MAC address was a serial
number that was
> a bit higher. So I had a look at my colleagues desk, and
actually somebody
> did some tests with another controller at that time, using
the same IP
> address like me! That was a bad coincidence.
>
> Thank you very much for your help, you made my day!
>
> Regards,
> Daniel
>
>
>
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