Hi All,
Was finding this difficult to trace cause but hopfully this might help others
proxmox (PVE1@ 192.168.1.2/24) (working fine for several months)
VM Zentyal 6.3 VM (192.168.1.1/24)
VM CenOS etc
...
Client (PC@ 192.168.1.116/32 DHCP via Zentyal, Zentyal wont allow /24 not...