root@target:~# cat /etc/network/interfaces
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

source /etc/network/interfaces.d/*

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto enp0s3
iface enp0s3 inet dhcp

#auto enp0s8
#iface enp0s8 inet static
#	address 172.29.236.3
#	netmask 255.255.255.0
#	network 172.29.236.0
#	broadcast 172.29.236.0
#	dns-nameservers 8.8.8.8

auto enp0s8
iface enp0s8 inet manual

auto enp0s8.10
iface enp0s8.10 inet manual
	vlan-raw-device enp0s8

auto enp0s8.20
iface enp0s8.20 inet manual
	vlan-raw-device enp0s8

auto enp0s8.30
iface enp0s8.30 inet manual
	vlan-raw-device enp0s8

auto br-mgmt
iface br-mgmt inet static
	bridge_stp off
	bridge_waitport 0
	bridge_fd 0
	bridge_ports enp0s8.10
	address 172.29.236.12
	#gateway 172.29.236.1
	dns-nameservers 8.8.8.8

auto br-vxlan
iface br-vxlan inet static
	bridge_stp off
	bridge_waitport 0
	bridge_fd 0
	bridge_ports enp0s8.30
	address 172.29.240.12
	netmask 255.255.252.0

auto br-storage
iface br-storage inet static
	bridge_stp off
	bridge_waitport 0
	bridge_fd 0
	bridge_ports enp0s8.20
	address 172.29.244.12
	netmask 255.255.252.0


root@target:~#