Got the same Problem here with my NetCologne internetaccess in Germany.
I tried out @Ashley Segovia’s way to change the target. Then it hangs up with the error code 7:11:3:189:101 (instead of 58:11:5:504:101).
If this (the first error) happens, it happens mostly simultaneous on every pc in the network.
It seems to happen randomly, not while teleporting (like the 32bit-bug) or something else((
One PC is connected wireless and one via cable… so this is not the problem.