Problem was fixed in 3.0.4-5 (Debian) / 3.0.4-6ubuntu1 (Ubuntu). Latest version in Edgy is not affected.
Problem was not fixed by using -q switch, but by redirecting also stderr to /dev/null, not just stdout. ** Changed in: dhcp3 (Ubuntu) Status: Unconfirmed => Confirmed -- Banner messages should be suppresed with -q switch on ifup and ifdown invocations https://launchpad.net/bugs/45374 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs