Description:

The systemd service fails to load the pdnsd daemon *after* the interface is up with NetworkManager The reason for this is that the service depends on network.target, not on network-online.target and it neither waits for network-online.target to be finished. As is, pdnsd starts but has no access to the datalink because it starts after pdnsd. To obtain DNS resolution, you need to restart pdnsd by hand

Rating high because it breaks functionality.

This service file works as expected:

##################################################################
[Unit]
Description=proxy name server
Wants=network-online.target
After=network-online.target

[Service]
ExecStart=/usr/bin/pdnsd

[Install]
WantedBy=multi-user.target
##################################################################