I'd like to add to what Andriy saying. Simultaneously reboot it is not just the one issue with "dhclient -1" logic here.
Debian machines will also will lose IP in one more case. It happens when debian trying to renew the lease at the moment when interface goes up and DHCP server is down for a moment. It happened on my home router, when I reboot the router. After reboot my router shutdown a link and put link back just before actual DHCP server functional. At this exact moment Debian clients try to require for an address, since interface just got up. And because router is still in reboot process all Debian machines die with no IP with a log message: dhclient: Unable to obtain a lease on first try. Exiting So. I hope it would be fixed soon. -- AK -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org