Hello everyone,
I would like to request disabling LLMNR protocol in new releases by
default. The protocol itself is deprecated even by Microsoft, who
disabled it in Windows 10. I think Multicast DNS is supperior and MS
thinks it also [1].
Because it is not implemented well in systemd-resolved, it has been
causing regressions. Because it won't work with the primary system it
was created for, I think it is good time to disable it in default
installations. If someone needs it, it can still be enabled manually.
But because it is breaking single label queries, I think it should not
be enabled unless requested. It is enabled even on Fedora Server, which
I consider serious mistake. Since even Windows desktops do not enable it
anymore, I think also Workstation edition should disable it by default.
I have created pull request [2] for that. Examples, how it breaks
correct DNS, are in issue [3].
I want to request disabling LLMNR by default in upcoming Fedora 39. I
would recommend doing that in any other distributions using
systemd-resolved in default installation.
Any opinions or comments?
Regards,
Petr
1.
https://techcommunity.microsoft.com/t5/networking-blog/aligning-on-mdns-ramping-down-netbios-name-resolution-and-llmnr/ba-p/3290816
2. https://github.com/systemd/systemd/pull/28263
3. https://github.com/systemd/systemd/issues/23622
--
Petr Menšík
Software Engineer, RHEL
Red Hat, https://www.redhat.com/
PGP: DFCF908DB7C87E8E529925BC4931CA5B6C9FC5CB
