XPost: comp.mobile.android, alt.os.linux, alt.comp.os.windows-10   
   From: Melzzzzz@zzzzz.com   
      
   On 2019-06-09, Johann Beretta  wrote:   
   > On 4/11/17 3:22 PM, Mike Easter wrote:   
   >   
   >>   
   >> For the same reason that when a cable modem releases its leased IP,   
   >> waits a short while, and then renews its lease with the DHCP, it gets   
   >> the exact same dyanmic IP back again.  Normally.   
   >>   
   >   
   > Not entirely accurate. Generally any device on a network, if it follows   
   > the RFCs, will request a renewal of a lease at the 1/2 way point of the   
   > lease.   
   >   
   > i.e. if the lease is valid for 10 hours, then the device will attempt to   
   > renew the lease after 5 hours.   
   >   
   > If the renewal is denied, the current lease is still valid for the   
   > remaining 5 hours at which point the device will generally request the   
   > new address at some point before the current lease has actually expired.   
   >   
   > If a device (cable modem included) released an IP address before getting   
   > a new one, there would be a break in traffic.   
   >   
   I noticed that on cable they associate IP address with MAC and then if   
   you change MAC you get different address. Return MAC, and you get   
   previous address :P   
      
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