Is the master server and media server the same ?
Are you testing bptestbpcd only for master or also for media server ?
Does this client has multiple nic ? Disable other nics if possible and check
Check your host file and DNS for name resolution forward and reverse
Can you add ip address to registry on clients server list and on master server additional servers add this ip and see if it works..
Please share nbsu form the client if possible
I have uploaded the bpcd log and bptestbpcd command out. please check. Name has been changed as below. media02.domain2.pvt, media03.domain2.pvt ..... are media servers.