Hm, maybe that helps. This is the contents of /run/systemd/netif/links/2 (which is my eth0):
# This is private data. Do not parse. ADMIN_STATE=configuring OPER_STATE=routable NETWORK_FILE=/run/systemd/network/10-netplan-eth0.network DNS=192.168.2.1 fe80::c66e:1fff:fe3b:bdcd NTP= DOMAINS= ROUTE_DOMAINS= LLMNR=yes MDNS=no ADDRESSES=192.168.2.159/24 ROUTES=192.168.2.1/32/0/100/254/18446744073709551615 0.0.0.0/0/0/100/254/18446744073709551615 DHCP4_ADDRESS=192.168.2.159 DHCP_LEASE=/run/systemd/netif/leases/2
ADMIN_STATE sounds suspicious.
Hm, maybe that helps. This is the contents of /run/systemd/ netif/links/ 2 (which is my eth0):
# This is private data. Do not parse. configuring FILE=/run/ systemd/ network/ 10-netplan- eth0.network 1fff:fe3b: bdcd 192.168. 2.159/24 192.168. 2.1/32/ 0/100/254/ 184467440737095 51615 0.0.0.0/ 0/0/100/ 254/18446744073 709551615 192.168. 2.159 /run/systemd/ netif/leases/ 2
ADMIN_STATE=
OPER_STATE=routable
NETWORK_
DNS=192.168.2.1 fe80::c66e:
NTP=
DOMAINS=
ROUTE_DOMAINS=
LLMNR=yes
MDNS=no
ADDRESSES=
ROUTES=
DHCP4_ADDRESS=
DHCP_LEASE=
ADMIN_STATE sounds suspicious.