We found the root of the problem. In our case the problem was located in the network driver e1000e. We sniffed the network *on* the PC and *before* the PC and found out that DHCP offers were sent, indeed, but not forwarded through the driver (for what reason, ever).
The upgrade of e1000e to 3.1.0.2 solved our problem. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to isc-dhcp in Ubuntu. https://bugs.launchpad.net/bugs/1350759 Title: dhclient logs DHCPDISCOVER request (stdout and syslog) but doesn't send anything Status in isc-dhcp package in Ubuntu: Fix Released Bug description: I'm experiencing the problem that `dhclient -4 -w -v` logs messages in the form `DHCPDISCOVER on <interface> to 255.255.255.255 port 67 interval 13 (xid=<xid>)`, e.g. `DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 13 (xid=0x6d59d111)` both to console (stdout or stderr) and syslog, but wireshark shows that there're no requests sent over the network!! It works as expected, i.e. DHCP requests are actually sent over the network, if (as far as I experienced iff) I invoke `dhclient -r` before. experienced with isc-dhcp-client 4.2.4-7ubuntu12 on Ubuntu 14.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1350759/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp

