<router> -> 'server1'(Win7)
<router> -> <switch> -> 'andruewfh'(Win10)
<router> -> <WAP> -(wifi)-> 'andrue-laptop2'(Win10)
Now all of the above works for individual use and has done for several years now. All machines are in the same Homegroup.
In addition I can:
* From 'andrue-laptop2' access files on and remotely control 'server1'
* From 'andruewfh' access files on and remotely control 'server1'
But what I cannot do is get 'andrue-laptop2' talking to 'andruewfh'. If I try to ping 'andruewfh' from 'andrue-laptop2' I get:
Pinging andruewfh.home.gateway [192.168.1.111] with 32 bytes of data:
Request timed out.
In the reverse direction I get:
Pinging andrue-laptop2.home.gateway [192.168.1.108] with 32 bytes of data:
Destination host unreachable.
From either of those two machines pinging 'server1' does not show the DNS suffix and also uses IPv6 (For what it's worth I have IPv6 on my WAN as well).
I do have quite a bit of experience with Windows networking but I cannot work out what the problem is here. Those two machines just don't want to talk to each other :-/