I totalyl agree with your comments and I am a network engineer too. TP Link are next to useless and have not been able to provide an answer or a firmware update to totally disable the DHCP Why on...

@Solla-topee Same problem here, after a power cut or if the main router reboots the 8630P gives out DHCP addresses and causes the entire network to crash, The lease ties it gives sare too long so...