bundles/systemd-networkd: use some more options for bond interfaces

bundles/systemd-networkd/files/template-bond.netdev

@@ -4,3 +4,12 @@ Kind=bond
 
 [Bond]
 Mode=${mode}
+% if mode in {'balance-rr', '802.3ad', 'balance-tlp'}:
+TransmitHashPolicy=layer3+4
+% endif
+MIIMonitorSec=1s
+LACPTransmitRate=fast
+% if mode == '802.3ad':
+AdSelect=bandwidth
+AdActorSystemPriority=${prio}
+% endif

bundles/systemd-networkd/items.py

@@ -72,6 +72,7 @@ for bond, config in node.metadata.get('systemd-networkd', {}).get('bonds', {}).i
         'context': {
             'bond': bond,
             'mode': config.get('mode', '802.3ad'),
+            'prio': config.get('priority', '32768'),
         },
         'needed_by': {
             'svc_systemd:systemd-networkd',

nodes/home/nas.py

@@ -43,6 +43,7 @@ nodes['home.nas'] = {
                         'enp8*',
                         'enp9*',
                     },
+                    'priority': '32770',
                 },
             },
             'bridges': {