OVS

Openvswitch

https://wiki.alpinelinux.org/wiki/OpenVSwitch

alpine linux 3.13 changed to use ifupdown-ng by default, mainly replacing netmask by the cidr notation

before

address 10.11.12.0
netmask 255.255.255.0

after

address 10.11.12.0/24 

Contents of /etc/network/interfaces

auto lo iface lo inet loopback auto eth0 iface eth0 inet static address 10.0.12.5 netmask 255.255.255.0 gateway 10.0.12.1 hostname alpine auto lan eth1 eth2 eth3 eth4 iface eth1 inet manual up ifconfig eth1 0.0.0.0 up down ifconfig eth1 down iface eth2 inet manual up ifconfig eth2 0.0.0.0 up down ifconfig eth2 down iface eth3 inet manual up ifconfig eth3 0.0.0.0 up down ifconfig eth3 down iface eth4 inet manual up ifconfig eth4 0.0.0.0 up down ifconfig eth4 down iface lan inet manual up ifconfig lan 192.168.1.5 up down ifconfig lan down auto wan eth5 iface eth5 inet manual up ifconfig eth5 0.0.0.0 up down ifconfig eth5 down iface wan inet dhcp iface6 wan inet auto

rc-update show -v
rc-update del ovs-modules default
rc-update del ovs-vswitchd default
rc-update del ovsdb-server default
rc-update add ovs-modules boot
rc-update add ovs-vswitchd boot
rc-update add ovsdb-server boot

ip link set dev eth2 up

ovs-vsctl add-br lan
ovs-vsctl add-br wan
ovs-vsctl list-br

ovs-vsctl add-port lan eth1
ovs-vsctl add-port lan eth2
ovs-vsctl add-port lan eth3
ovs-vsctl del-port lan eth3
ovs-vsctl list-ports lan

ovs-vsctl add-port lan eth0
ovs-vsctl list-ports wan

ovs-appctl fdb/show voip
ovs-appctl fdb/show lan

Contents of /etc/xen/xl.conf

vif.default.script="vif-openvswitch" vif.default.bridge="lan"