wsl: update

wsl/README.md

@@ -1,5 +1,6 @@
 ## Force DNS Usage inside VPN
 
+### SystemD
 ```bash
 $ cat /etc/systemd/system/vpn-dns.service
 [Unit]
@@ -7,15 +8,48 @@ Description=VPN DNS Configuration
 
 [Service]
 Type=oneshot
-ExecStart=/bin/vpn-dns.sh
+ExecStart=/bin/vpn-dns
 Environment=TERM=xterm
 
 [Install]
 WantedBy=multi-user.target
 ```
 
+### OpenRC
+
 ```bash
-$ cat /bin/vpn-dns.sh
+#!/sbin/openrc-run
+# Distributed under the terms of the GNU General Public License v3 or later
+name="vpn-dns"
+description="VPN DNS Configuration"
+pidfile="/var/run/vpn-dns.pid"
+command="/bin/vpn-dns"
+
+depend() {
+    use net
+}
+
+start() {
+    ebegin "Starting ${name}"
+    start-stop-daemon --start --exec "${command}" --pidfile "${pidfile}"
+    eend $?
+}
+
+reload() {
+    ebegin "Reloading ${name}"
+    start-stop-daemon --signal HUP --pidfile "${pidfile}"
+    eend $?
+}+
+
+stop() {
+   ebegin "Stopping ${name}"
+   start-stop-daemon --quiet --stop --exec "${command}" --pidfile "${pidfile}"
+   eend $?
+}
+```
+
+```bash
+$ cat /bin/vpn-dns
 #!/bin/bash
 
 echo "Getting current DNS servers, this takes a couple of seconds"