Strange network issue
Not sure if this is a Linux, Mint, Windows, Wireguard, or network issue... so this should be easy to sort out!
I have Mint on my laptop. I have a Win11 PC at work running some very old proprietary win only software - headless, only access is via RDP. I have just setup a Wireguard connection from my laptop (and phone) to connect to the work network.
I can access my work network ok - almost all devices on 192.168.0.0/24 are visible, I can log into interfaces (eg Unifi 192.168.0.2) and I can ping the IP addresses of printers etc - but not for this WinPC (192.168.0.77).
Logged into the Unifi controller over the wireguard link, the pc is visible and online.
Using my android phone I can RDP to the PC at that address (so the device is online and actively accepting RDP connections).
It's not the WinPC, it's not RDP, it's not my work network (?) , it's not wireguard - it seems my Mint laptop has some issue with this ip address 192.168.0.77, but is fine with other addresses on the same subnet.
My home network is 192.168.10.0/24 so it's not an IP address clash.
I've seen comments on networking subs "it's always DNS" - is it DNS?? Why just this one pc? Seems weird, I'm hoping someone else has seen similar and can give me a hint on where to look next as I'm stumped.