Setting https_proxy worked for me. It sounds like the real source of confusion surrounding this issue is that the default /etc/sudoers configuration does not pass through http_proxy, https_proxy, ftp_proxy, all_proxy, etc (see bug #556293).
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/516032 Title: add-apt-repository doesn't work behind a proxy To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/software-properties/+bug/516032/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs