Date: 22-02-02 04:05
try configuring crontab with:
0 0 * * * /usr/bin/killall dhclient && dhclient ed0
where 0 0 * * * is once a day. every day
and /usr/bin/killall dhclient - releases your ip and
dhclient ed0 - renews your ip ( the "&&" ensures the first command is complete before the second starts)
If there is an error in the syntax ..sorry..I am extremely tired.
But you get the idea.