Change wireless to wired breaks sync

[heavily-panda-saucy]

I was running a sync and I plugged in ethernet to my laptop to speed things up, and the transfer rate went to zero. I waited for a minute or so and then gave up, pressed 'Stop' and it said 'Stop Requested', I waited for two minutes or so and then gave up, tried to close the window and Debian said the application has stopped responding, so I force quit. I restarted my sync and it went fine. I don't know if this is just outside the intended use of the program, or if this is an edge case to be covered, but I thought I would share.

```
$ cat /etc/os-release
PRETTY_NAME="Debian GNU/Linux 11 (bullseye)"
$ uname -r
5.10.0-16-amd64
```
my FFS version is 11.25 donation edition.

[xCSxXenon]

That is probably/definitely an issue with how your distro is handling the network transfer. On Windows, I can swap NICs without FFS having anything more than a small pause when switching from WIFI to ethernet or vice versa.