[App_rpt-users] private nodes with dynamic IP

Hi all, I am a new app_rpt user, I have a server with installed ACID, server have static IP. I have 3 assembled RTCM boards configured as voting repeater, it works fine. One RTCM can work as simplex node too. I was compiled app_rpt for Raspberry pi with SimpleUSB, it works, but I have question: How I can connect 2 maybe 3 or more) PC based "slave" nodes (endnodes with radio connected) to "master" server, if only "master" server have a static IP, and all endnodes use dynamic? Two nodes in local network with static IP works fine All my nodes a private system(s), not in Allstar network. Master server have static IP, and all endnodes (PC based and RTCMs have dynamic addresses) Thanks! Mihhail Jakovlev ES1BIS