[Bug Report]: LAN Does Not work

[Eyeveri]

Modpack Version

1.4.1

Describe your issue.

When opening a world to LAN, it claims to open - but when my wife tries to connect, there is nothing at all.
We've done this extensively on other modpacks and have had no issues.
We attempted to directly connect via localhost. We received the error "Connection Failed: GetSockOpt".

Crash Report

N/A

Latest Log

N/A

Have you modified the modpack?

No

User Modifications

No response

Did the issue happen in singleplayer or on a server?

Singleplayer

Discord Username

No response

[marcobsidian]

Me and my friend are having the same issue on a Not-LAN-Server. He timed out, then couldnt rejoin afterwards. I can still join normally. I also had the error once when logging in during a server restart, but simply tried again and never saw the error again.