bundles/systemd-networkd: support bond and bridge interfaces

bundles/systemd-networkd/files/template-iface-nodhcp.network

@@ -0,0 +1,38 @@
+<%
+    from ipaddress import ip_network
+%>\
+[Match]
+Name=${interface}
+
+% for addr in sorted(config.get('ips', set())):
+[Address]
+<%
+    if '/' in addr:
+        ip, prefix = addr.split('/')
+    else:
+        ip = addr
+        prefix = '32'
+%>\
+Address=${ip}/${prefix}
+
+% endfor
+
+% if 'gateway4' in config:
+[Route]
+Gateway=${config['gateway4']}
+GatewayOnlink=yes
+% endif
+
+% if 'gateway6' in config:
+[Route]
+Gateway=${config['gateway6']}
+GatewayOnlink=yes
+% endif
+
+[Network]
+DHCP=no
+IPv6AcceptRA=no
+
+% if config.get('forwarding', False):
+IPForward=yes
+%endif