Please note this issue is now documented as a DNS violation at https://github.com/dns-violations/dns-violations/blob/master/2018/DVE-2018-0001.md
@superm1 1. Start wireshark, start recording traffic across all interfaces, turn wifi on, try to connect to the guest network, fail, stop collecting the traffic and please send it to me (via here, new private bug, to my email, ping me a url with the dump - as appropriate). 2. Get online (or pre-cache these ahead of time) and upgrade to: $ sudo add-apt-repository ppa:ci-train-ppa-service/3216; sudo apt update; sudo apt full-upgrade; sudo reboot 3. Rince repeat full wireshark dump & send that to me as well. Note: https://launchpadlibrarian.net/362123426/systemd_237-3ubuntu4_237-3ubuntu5.diff.gz It hardcodes securelogin.networks.dell.com, and I expect to see "DVE-2018-0001" in $ journalctl -u systemd-resolved If this PPA works, then we can assert that EDNS0 is broken with these captive portals. Or if things don't work either way, then it's something else. So far, this is our best guess. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1727237 Title: systemd-resolved is not finding a domain To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1727237/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs