bundles/systemd-networkd: some more dhcp settings

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

@@ -7,7 +7,20 @@ Name=${interface}
 [Network]
 DHCP=yes
 IPv6AcceptRA=yes
+
+[DHCPv4]
+UseDomains=${str(config.get('use_dhcp_domains', False)).lower()}
 UseHostname=no
+UseMTU=${str(config.get('use_dhcp_mtu', True)).lower()}
+UseNTP=${str(config.get('use_dhcp_ntp', False)).lower()}
+UseTimezone=no
+
+% if config.get('send_hostname', True):
+SendHostname=yes
+Hostname=${node.name.split('.')[-1]}
+% else:
+SendHostname=no
+% endif
 
 % if config.get('forwarding', False):
 IPForward=yes

nodes/kunsi-t470.py

@@ -31,6 +31,8 @@ nodes['kunsi-t470'] = {
         'interfaces': {
             'enp0s31f6': {
                 'dhcp': True,
+                'use_dhcp_domains': True,
+                'send_hostname': False,
             },
             # there is also wlp4s0, but that's managed by netctl
         },