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‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐ On Tuesday, October 5, 2021 2:00 PM, Pierre Frenkiel <pierre.frenk...@gmail.com> wrote: > hi, > I have the following problem on my laptop. > my /etc/network/interfaces file contains: > auto enp0s1 > iface enp0s1 inet static > address 192.168.1.10 > netmask 255.255.255.0 > gateway 192.168.1.1 > > but after boot, ifconfig gives > > address 192.168.0.163 > netmask 255.255.255.0 > gateway 192.168.1.1 > > Then, networking works i.e. I can reach Internet, but of course > not my desktop and other devices 192.168.1.xx > > I looked on the entire disk to find where this address 192.168.0.163 > is hidden, but I was unable to find it ! > > rather strange, isn't it? Most peculiar indeed. Does the interface always get the same address? Have you tried setting the IP with ifconfig -- after the box is up with the bad IP address? Is there anything in /etc/init.d that might be doing it? Have you looked at dmesg? (That 163's gotta be somewhere.) Have you looked at what's in /etc/network/interfaces.d? (There's nothing in mine, but ifup works as expected here.) Have you tried Webmin? (I know, I know, but it works.) Have you tried pinging the two addresses? (Not likely, but something's bent somewhere.) A workaround: change the netmask everywhere on your LAN to 255.255.0.0 and let the address be whatever systemd wants to assign to it :-) -- Glenn English -----BEGIN PGP SIGNATURE----- Version: ProtonMail wsBzBAEBCAAGBQJhXL2SACEJEJ/XhjGCrIwyFiEELKJzD0JScCVjQA2Xn9eG MYKsjDLdhwgAwp4apR3uGebYU5bOx+qQbh8iGDFa+sPxMzqdzYa0bVBcoaUE hzxPw1+pAe3vEfD/VYYrm5GGC4aUHILqH7SffpMMbWEZtSaL5ghKC8EGZhlk wcP0d7p3paPNvKpCHMOUkxDQOd04Cqu+gudkeiQasqAPBqnTzLpk0sEBIsj9 EMeA/RCivsIGt+VvNQPaR2+surTnubOx95pwT/SmFT1at6awcbiYYNjUU08T rnOdSAA1A7/X5UED1Mo5R+6k/DT3DqKzkK1jmwY1IKt24iBLH4wn/2md6j8w WpbLDjn/U9Gb+rpNqdEhLkVwMgLrxFRkyKkH+gJangN7JyExoT6RbQ== =Ze8U -----END PGP SIGNATURE-----