--- rpcbind-1.2.5/systemd/rpcbind.service.in	2018-08-15 16:51:19.000000000 +0200
+++ rpcbind-1.2.5/systemd/rpcbind.service.in.new	2018-08-15 21:11:56.598858968 +0200
@@ -12,6 +12,7 @@
 [Service]
 Type=notify
 # distro can provide a drop-in adding EnvironmentFile=-/??? if needed.
+EnvironmentFile=/etc/conf.d/rpcbind
 ExecStart=@_sbindir@/rpcbind $RPCBIND_OPTIONS -w -f
 
 [Install]