On Tue, Jan 11, 2022 at 9:19 AM Erez D <erez0...@gmail.com> wrote: > The windows 169.25. ip is from APIPA and not from any DHCP server > (ipconfig does not specify a dhcp server). > 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 > > 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 ... >
can you run tcpdump on your router? does it show the dhcp requests from your windows machine? > > why do you thing HOMEGROUP is related ? it is a higher layer protocol when > the problems seems to me on layer 2 > > Thanks, > Erez > > > > > On Tue, Jan 11, 2022 at 8:36 AM <borissh1...@gmail.com> wrote: > >> On Monday, 10 January 2022 19:30:55 IST Erez D wrote: >> > I've encountered a network problem >> > >> > i have a mac and a win10 machine connected to a 4 port Gbit wifi6 AP >> > (switch mode). >> > a third eth from the AP goes to the router which is also a DHCP server >> > >> > everything works well until the mac goes to sleep. >> > when the mac goes to sleep, the win10 machine looses it's ip address >> > which becomes a 169. address >> > >> > as soon as i wake the mac up, the win machine regain a valid 10.0.0.x ip >> > >> > i tried to replace the AP with a 4 port switch and got same results >> > >> > >> > any idea ? >> > >> >> IP in the 169.254.0.0/16 range is related to bonjour protocol , it is a >> link local communication. >> >> your windows would move to a bonjur ip in many cases but most common that >> can happen if your machine has a bonjour service enabled and an Ethernet >> card with dhcp that can not get an ip from the router. >> >> 1. Check if when the mac is running your windows machine got it's ip from >> the mac and not from the router. in some cases mac can have dhcpd running >> on it, if that is the case you should disable it if you do not need it. >> 2. Check if homegroup is enabled on win10, if it is disable it (by >> version 1803 it is no longer active by default, but you could have hacked >> to enable it). >> >> >> _______________________________________________ > Linux-il mailing list > Linux-il@cs.huji.ac.il > http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il >
_______________________________________________ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
