add partie 2 et debut 3

templates/interfaces.j2

-{% for host in groups['routers'] + groups['hosts'] %}
-auto {{ hostvars[host]['ifnameB'] }}
-iface {{ hostvars[host]['ifnameB'] }} inet static
-    address {{ hostvars[host]['ipB'] }}
-    netmask {{ hostvars['all']['netmask'] }}
-{% if host in groups['routers'] %}
-auto {{ hostvars[host]['ifnameA'] }}
-iface {{ hostvars[host]['ifnameA'] }} inet static
-    address {{ hostvars[host]['ipA'] }}
-    netmask {{ hostvars['all']['netmask'] }}
-    post-up ip route add {{ hostvars[host]['subnet'] }} nexthop via {{ hostvars[host]['nexthop'] }}
-{% else %}
-auto {{ hostvars[host]['ifnameA'] }}
-iface {{ hostvars[host]['ifnameA'] }} inet static
-    address {{ hostvars[host]['ip'] }}
-    netmask {{ hostvars['all']['netmask'] }}
-    post-up ip route add default via {{ hostvars[host]['gateway'] }}
-{% endif %}
-{% endfor %}
\ No newline at end of file