I have a problem with reaching linux hosts through my home network, and I'd be glad for someone to point me in the right direction.
I have a main wifi and wired router running DHCP. All IP addresses are statically assigned in the DHCP server tied to the machines' MAC addresses. Computer A has a wired connection to the main wifi router.
There is a secondary wifi router connected to the main one (via a wired link). It doesn't do NAT or DHCP, it is an access point.
I notice that when computer B is connected to the main router via wifi, I can reach it using its static IP from computer A. However, when it is connected to the secondary wifi access point, then sometimes(!) I cannot, even though it gets the correct IP from the DHCP server.
I remember that in these cases the error message is that no routes were found to the IP address, but I cannot reproduce it at the moment to run traceroute etc.