Subnet for wake on lan with network binding

Add-ons Bindings
4

Ok honestly, I have overseen this in the code example.
Nevertheless it does not work for me.
For my local NAS I have:

val actions = getActions("network", "network:pingdevice:localNAS")
actions.sendWakeOnLanPacket()
localNAS_Online.postUpdate(OFF)

Which perfectly works as intended.

I had the same for the remote NAS which is connected via LAN-LAN VPN of AVM fritzbox. It is just in another subnet. If online I can easily contact it via the IP.
Now I changed for the remote NAS to:

val actions = getActions("network", "network:pingdevice:remoteNAS")
actions.sendWakeOnLanPacketViaIp()
remoteNAS_Online.postUpdate(OFF)

And get following log:

[ERROR] [internal.handler.ScriptActionHandler] - Script execution of rule with UID 'WOL_NAS_remote' failed: val actions = getActions("network", "network:pingdevice:remoteNAS")
actions.sendWakeOnLanPacketViaIp()
remoteNAS.postUpdate(OFF)
The method sendWakeOnLanPacketViaIp() is undefined for the type ThingActions; line 2, column 91, length 24

The IP is correctly configured in the thing and I am running the latest version of the binding and openhab.

Found a comparable issue without solution:

Any idea?