--- /usr/lib/systemd/system/dhcpcd@.service	2020-05-04 17:55:26.393998984 +0200
+++ /etc/systemd/system/my-dhcpcd@.service	2020-05-06 17:04:43.115405095 +0200
@@ -9,7 +9,7 @@
 Type=forking
 PIDFile=/run/dhcpcd/%I.pid
 ExecStart=/usr/bin/dhcpcd -q -w %I
-ExecStop=/usr/bin/dhcpcd -x %I
+KillMode=process
 
 [Install]
 WantedBy=multi-user.target