module-tinc/templates/switch/tinc-up.erb

#!/bin/sh

grep <%= @real_tinc_bridge_interface %> /proc/net/dev | awk -F: '{ print $1 }' | grep -q <%= @real_tinc_bridge_interface %>
if [ $? -gt 0 ]; then
  brctl addbr <%= @real_tinc_bridge_interface %>
  ip addr delete <%= @real_tinc_internal_ip %>/<%= @real_tinc_internal_netmask %> dev <%= @tinc_internal_interface %>
  ip addr add <%= @real_tinc_internal_ip %>/<%= @real_tinc_internal_netmask %> dev <%= @real_tinc_bridge_interface %>
  brctl addif <%= @real_tinc_bridge_interface %> <%= @tinc_internal_interface %>
  ip link set dev <%= @tinc_internal_interface %> up
fi

brctl addif <%= @real_tinc_bridge_interface %> $INTERFACE
ip link set dev   <%= @real_tinc_bridge_interface %> up
ip link set dev  $INTERFACE up
<% if @override_mtu -%>
ip link set dev $INTERFACE mtu <%= @override_mtu.to_i %>
<% end -%>