If you’re like me, you love the granular permissions capabilities of MySQL but hate the work that goes into managing them…
Unfortunately, there doesn’t seem to be anything like groups in MySQL and according to plans won’t be added officially until MySQL 7.0 (WL#988)…
While searching around, I found Securich…

Hi,
Here is a fairly short regular expression you can use to match valid IPV4 IP addresses:/^(((25)|(2)|(1??))\.){3}((25)|(2)|(1??))$/
Good luck!