I am using the "ip cloud" DYNDNS of my mikrotiks to create a whitelist for connection to my central router. The problem comes in tracking which entries are to be removed when necessary which leaves me with an ever growing list. I would like to put a time stamp of 30 days on each entry and reset the timer back to 30 days if I can ping the fqdn once every hour. This will purge any routers that becomes redundant for my purpose. i.e. the entry will eventually timeout after 30 days of inactivity.
I need to ping all entries in the address list list=name.
I can't seem to extract only the fqdn part for use in my ping script.
Could someone please lend a hand.