wnettools.py does not interface with resolvconf correctly

[Thomas Hood]

If resolvconf is installed, wnettools.py uses "resolvconf -a" to add a nameserver information record. However, a grep through the code reveals that it nowhere removes that record (using "resolvconf -d"). This is a bug. When the program deconfigures the interface, or at the very least when it quits, it must delete the record that it earlier created. Otherwise this stale record remains in the system until reboot.

I am guessing that the reason that there is no "resolvconf -d" is that wicd-daemon.py backs up and restores /etc/resolv.conf and that this was thought to make it unnecessary to do "resolvconf -d". If my guess is right then please note that this is a bug. When resolvconf is installed, other software should never touch /etc/resolv.conf. At all. I will repeat that. Don't touch /etc/resolv.conf --- neither the symlink nor the contents of its target. In particular don't "restore" it. (And therefore don't "back it up", as there is no need to do so, since you won't be "restoring" it.) As just mentioned, the way for wicd to restore the original situation (as far as wicd is concerned) is to delete the resolvconf record that it created, using the "-d" option.