search for: relolad

Hi all, My asterisk box have some peers with as host the name of a dynamic dns resolver ex: foo.dyndns.org. All works fine, until the host foo.dyndns.org for some reason change his ip, asterisk didn't resolve again the new ip until a "sip relolad" Actually, i use a cron with a bash script to track the ip and eventually reload the sip.conf. Any tips for Asterisk ? Something like externrefresh for a peer? Thanks, Alessandro