Looking at the logs it seems that something is misconfigured for DHCP causing this error:
ValidationError: {u'subnet_mask': [u"That field cannot be empty (unless that interface is 'unmanaged')"]} Please make sure that your DHCP configuration is correct, or set the interface you are trying to manage to unmanaged again in order to allow the UI to work agian. ** Also affects: maas Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1199469 Title: MaaS WebUI does not work after reboot To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1199469/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs