This is very surprising: what xbrlapi tries to connect to by default is a local socket in /var/lib/BrlAPI/0 so that should be completely independent from TCP/IP networking configuration, and should be either succeeding or failing immediately.
Just to be sure: Does /var/lib/BrlAPI/0 exist? Is brltty running on your system? If you have a brltty daemon running it'd be useful to check for its logs.
Perhaps you can log into a text console and run strace on the stuck xbrlapi command:
This is very surprising: what xbrlapi tries to connect to by default is a local socket in /var/lib/BrlAPI/0 so that should be completely independent from TCP/IP networking configuration, and should be either succeeding or failing immediately.
Just to be sure: Does /var/lib/BrlAPI/0 exist? Is brltty running on your system? If you have a brltty daemon running it'd be useful to check for its logs.
Perhaps you can log into a text console and run strace on the stuck xbrlapi command:
strace -p $(pidof xbrlapi)
so we get to know what it is stuck on.