My router is a Linux PC with 2 lan boards, one for local lan and the other directly connected to the ISP router (configured as bridge). Each time my ISP disconnects me for whatever reason I had to either reboot the computer or keep running rc.inet1 restart until the connection is made.
So, even if it doesn't happen often, at one point I got bored of it and decided to write an script to force the reconnection as soon as possible:
#!/bin/bash
while true ; do
clear
./rc.inet1 restart
ping google.com -c 1
if [ $? == 0 ]; then
exit
fi;
sleep 30
done
