# IPv6 General Prefix

**URL:** https://forum.networklessons.com/t/ipv6-general-prefix/2987
**Category:** Lessons Discussion
**Created:** [February 19, 2018, 12:36pm UTC](https://forum.networklessons.com/t/ipv6-general-prefix/2987 "2018-02-19T12:36:17Z")
**Posts on this page:** 1
**Showing post:** 4

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### Author: ![syncope988](https://cdn-forum.networklessons.com/user_avatar/forum.networklessons.com/syncope988/32/1385_2.png) [@syncope988](https://forum.networklessons.com/u/syncope988)
#### Post date: [March 12, 2020, 12:46am UTC](https://forum.networklessons.com/t/ipv6-general-prefix/2987/4 "2020-03-12T00:46:51Z")

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thanks a lot LAZ,  
i will do a lab to test the EEM solution (and if i succeed i will do a post)  
I accept also the solution with device programmability although i need to dive deeper in network programmability to config this type of solution

But for DHCPv6 and prefix delegation, it is not quite clear; suppose the ISP has to change the binding of just one customer

 ![image](https://cdn-forum.networklessons.com/uploads/default/original/2X/7/77ed1f834fcb08fee0d3908970e4447e96068ef4.png)

It has to change C1’s binding with a given value for some reason; for example 1100 has to be replaced with 1109. No change for C2.

How can the ISP do this at a specific time ? assuming the customer has nothing to do to get the new prefix at this specific time.  
This will be beautiful feature, but not quite sure it is possible ?  
Regards

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