|This one mystifies me a bit. I've had a dynamic IP for more than 10 years, originally dial-up and then ADSL. I've never had to do a thing, it is all looked after by my ISP. I only "happen to know" it's dynamic and therefore often changes.|
The only time I really "notice" it changes is if I go online for a security test and they show your IP on the webpage before you start. Even then it doesn't matter.
I'm in the UK, maybe this presents a problem elsewhere.
some other bloke...