Originally Posted by JJKom
This might be just shot-in-the-dark but I have noticed similar problem in pure win network and new router.
For some reason that router is limiting access to only those IPs that are in DHCP range, in this case those Amiga IPs are outside it.
No matter if connection was wireless or wired, that router did not "see" or allow traffic with IPs outside its DHCP range.
This sounds like the best explanation for the strange behaviour!
Fix was to use only IPs that are inside, in this case set router to give always same IP to those Amigas and use DHCP with them.
Roadshow supports DHCP, so this should be easy to put to the test
However, I still find it difficult to explain why the ARP packets did not reach the WLAN portion of the network, unless the ZyXEL access point is hooked up directly to the home router, and the home router decides all by itself which packets to exchange with it. If this is the case, I would suggest attaching a separate switch to the home router, and plug the ZyXEL access point, as well as the other "wired" Amigas into it.