How to make the arp command resistant to reboot on OS X.

For SIS3316 Ethernet operation you may want your OS X system to execute an arp command at startup.

Thanks to Bela Farago from ILL for pointing us to the link below:

http://apple.stackexchange.com/questions/123279/add-static-arp-entry-at-boot

Needs a launchd daemon, which waits until the network is up and then executes arp -s…

Note, OS X does not like (take) the -i option, thus the scripts given there are the good ones.