C:\Program Files\Oracle\VirtualBox>VBoxManage.exe list dhcpservers
NetworkName: HostInterfaceNetworking-VirtualBox Host-Only Ethernet Adapter
IP: 192.168.56.100
NetworkMask: 255.255.255.0
lowerIPAddress: 192.168.56.101
upperIPAddress: 192.168.56.254
Enabled: Yes
C:\Program Files\Oracle\VirtualBox>VBoxManage.exe dhcpserver modify --netname "HostInterfaceNetworking-VirtualBox Host-Only Ethernet Adapter" --disable
C:\Program Files\Oracle\VirtualBox>VBoxManage.exe list dhcpserve
NetworkName: HostInterfaceNetworking-VirtualBox Host-Only Ethernet Adapter
IP: 192.168.56.100
NetworkMask: 255.255.255.0
lowerIPAddress: 192.168.56.101
upperIPAddress: 192.168.56.254
Enabled: No