forcing new dynamic ip address

[Ernie Luzar]

Erwan David wrote:
> Le 10/08/17 à 14:28, Ernie Luzar a écrit :
>> Hello List;
>>
>> I have a "home service" account from my ISP. The ISP issues an dynamic
>> ip address which has not changed in 12 years.
>>
>> My host has 2 NICs, one which is not used. I know if I plug the internet
>> cable into the un-used NIC and make the appropriate config changes and
>> reboot I will get a different dynamic ip address.
>>
>> Is there a simpler way to expire the lease to force the ISP dhcp to
>> refresh with a different dynamic ip address?
>>
>> The goal is to have a cron job that gets a different dynamic ip address
>> assigned to my host's front door every a week.
>>
>> Just another level of security to make it very hard for the script
>> kiddies from finding any open ports I may have.
>>
>> Thanks for the help.
>>
> 
> DHCP protocol states that the server should try to give you the same IP
> address. And dhcp servers keep track of the addresses they allocated in
> the past, to give them back if possible.
> 

Yes I know that. The question is there a way to request their dhcp 
server to over ride that default behavior?