Whenever I try to scan from another computer it has to establish >2
connections in order to succeed. With the connections being limited to 1
I can not scan any document.
This is also what other distributions ([Debian], [ArchLinux], …) have
done in one way or another.
[Debian]: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=850649#5
[ArchLinux]: no limit: 99cba454bb/trunk/saned.socket (L4)