@ cash_site,it is "fixed" sort off.

i ended up asigning each machine it's own IP.
the idea came from another thread i started on here somewhere a little while ago.

@ dehcbad25,good point that,
think i might knock it back down to around 7 days.

thanks everyone,
all machines have kept thier IP's that i gave them a while ago.
all's good in the hood.