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john22rob · 19-08-2014, 11:08 PM

it seems to disconnect me and then changes the ip address

**mirdragon** · 19-08-2014, 11:09 PM

if it constantly disconnecting you, you may have issue on line or faulty equipment

alexatkin · 20-08-2014, 03:19 PM

(19-08-2014 09:49 PM)Chalky Wrote: It's a unnecessary throw back to the dial-up days when not everyone was connected all the time and ISPs operated in the hope that not everyone will connect and they could regularly recycle a smaller number of IPs. Fast forward to today and always on connections have scuppered this but companies haven't changed the infrastructure other than adding more DHCP ranges. They wouldn't have to change this, just extend the lease time for a much longer time.

When setting up PPP servers, I find it much easier NOT to use DHCP because less hassle to set-up and it's easier to keep track of how many IPs you have to allocate.

Some ISPs seem to run on sticky IPs, where it will just continue to re-issue the same IP for long periods. Although if that is just because the IP becomes free and then is immediately re-issued (thus goes to the same person) I'm not sure.

I notice Virgin Media seem to have really long IP allocation times as I can go weeks before my friends IP changes.