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Old 27-07-2018, 17:35   #4
heero_yuy
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Join Date: Mar 2009
Location: Worthing West Sussex
Age: 66
Services: VM 500M SH3 thingy in modem mode XL TV V6 Sony Bravia smart TV and M phone
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Re: Virgin Media Broadband - Change IP ?

Quote:
Quote from beaker17:


If the power is turned off overnight, the modem will allocate a new IP.
True or false ?
Unlikely. VM's IP numbers are quite sticky and it usually needs something like a re-segmentation to change the numbers. The IP numbers are allocated by network DHCP to specific modems when they request one rather than the other way. Normally the IP number has a "lease" period. At the end of the lease period the number is dropped and the modem requests a new one. Usually the one that is available is the one that the modem just dropped. Hence the "stickyness"

As above switching to modem mode from router mode will change the IP. I suspect that switching back will just retrieve the original one unless a significant period is involved.
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