Wed Apr 13, 2022 2:56 pm
This works less and less as ISP’s have sticky IP’s due to really long DHCP lease times. Remember- devices update DHCP information based on its expiration. so disconnecting for a day does nothing. Lease updates usually halpen once the lease is reaching 90% if its time. (ex: super long ISP lease is 10 weeks, it would take 9 weeks before getting a new (or same) reservation, etc.)
I do not understand why people still suggest 24hr/xx min trick, what is this 10 years ago? Everything is MAC auth’d now. Don’t try MAC spoofing either, in most cases it is useless and MACs that are not authorized wont connect. For example, we do this with VOIP lines at my datacenter.
tl;dr: you need to ride it out because nobody in your ISP has the power to change this and waiting 24hrs / xx mins will do nothing.
As for OPs observations of network that is basic WAN-LAN networking. You can actually change your entire network from 192.168.0.0/16 to 172.16.0.0/16 or 10.0.0.0/8. These are all private LAN ranges.