Probably related to Bug #527313, the "-4" option was mentioned in one of the comments there.
However, the workarounds mentioned there do not work for me. I have to stop NM and do iwconfig and dhcpclient manually. -- dhclient3 not recognize -4 option sent by network manager https://bugs.launchpad.net/bugs/633568 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs