Comment 13 for bug 997200

Aron, let me know if I should open a new bug report instead. I haven't tested this yet but I could. I just had someone ask me why Ubuntu GNOME doesn't support this if GNOME has for 2 years.

https://www.lguruprasad.in/blog/2015/07/21/enabling-captive-portal-detection-in-gnome-3-14-on-debian-jessie/

https://labs.riseup.net/code/issues/10526

See also bug 914507 bug 1072675

Since all that is apparently needed is an /etc file, I guess this could be enabled selectively by gnome-shell if it doesn't work on Unity but I'm curious if there was a reason this isn't enabled in Debian or Ubuntu.