OT: strange network problem

[borissh1983 at gmail.com]

On Tuesday, 11 January 2022 9:18:47 IST Erez D wrote:
> The windows 169.25. ip is from APIPA and not from any DHCP server (ipconfig
> does not specify a dhcp server).

Thank you for your enhancement, and more specific explanation.  I was wrong ,it's APIPA which implement it and not the bonjour service.

> to be on the safe side I verified udp port 67 is unused on my mac (via
> netstat, fuser and socat)
> 
> what boggles me is why can't the window machine access the router and get
> an ip when the mac is sleeping
> 


He may be getting the ip and routing *from* the mac itself (mac running dhcp server).

> as the AP switch is layer 2, i would susspect the switch disables the
> windows machin for some reason,
> e.g. it sees the same mac address from another port or detects abuse of
> somewhat from the windows eth port
> however i do not understand how is this related to the mac sleeping
> 
> I thought the AP switch maybe defective but puting another GB switch
> instead causes the same results ...
> 
> why do you thing HOMEGROUP is related ? it is a higher layer protocol when
> the problems seems to me on layer 2
> 

homegroup is effectively a vpn , it's easy to make mistake there (speaking from experience) and lock yourself from the local network at home.

> Thanks,
> Erez
> 
> 
>