Use this bash script to simulate lag on localhost but not eth0. Start a game with two players and call `setlag 80000` to induce a long timeout.
Call `setlag 0` to disable it again.
```
function setlag()
{
# for device in "eth0"; do
for device in "lo"; do
sudo tc qdisc del dev $device root netem;
if [ $1 -ne 0 ]; then
sudo tc qdisc add dev $device root netem delay ${1}ms;
fi
done
}
```