Hog 4 and DP8000 networking

Hi, currently battling through putting together a network with 2x Hog 4s and 2x DP8000 (old style blue ones) everything is updated to 4.2.0 (b3753), same IP address range, subnet mask (255.255.255.0). Currently the two consoles are working in a server session with one another but DP8000s keep on making their own server so not able to unlock parameters from them. Any help is greatly appreciated.