-<%- node.interfaces(:role => :external).each do |external| %>
-<%- node.interfaces(:role => :internal).each do |internal| %>
- oif { < %= external[:interface] %> } ip saddr { <%= internal[:network] %>/<%= internal[:prefix] %> } snat <%= external[:address] %>
+<%- node.interfaces(:role => :external, :family => :inet).each do |external| %>
+<%- node.interfaces(:role => :internal, :family => :inet).each do |internal| %>
+ oifname { <%= external[:interface] %> } ip saddr { <%= internal[:network] %>/<%= internal[:prefix] %> } snat <%= external[:address] %>