On Tue, Jan 11, 2022 at 11:26 AM Erez D <erez0...@gmail.com> wrote: > > > On Tue, Jan 11, 2022 at 9:29 AM Ohad Levy <ohadl...@gmail.com> wrote: > >> >> >> 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? >> > Alas, No. I know it is sacrilege but I use a hot cable modem/router. > I do not have hardware that can support 500Mb to be used as a linux > firewall ... > openwrt :)
but technically, if you have a 3rd machine, you should be able to see dhcp requests being broadcasted on layer2 > > Thanks, > Erez. > > >>> 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 >>> >>
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