Ok solved did go to my router to see the recalbox ip.
Entered that in a webpage , got to the conf.
Changed it and done.
Maybe next time advice people to search for the ip in the routersetup look at connected divisies Write down all the ip's check them 1 by 1 if Needed. And they will find the conf setup.
Thanks for the help you 2, hope i also added something usefull.
Wish you all the best
Sfx