When an end user changes their IPv6 provider, which provided them with IPv6 addressing, then they must also change their IPv6 prefix to preserve their global aggregation.

Obtaining a pool of IPv6 addresses directly from LACNIC can have its advantages and disadvantages, depending on your specific needs and circumstances. Here are some points to consider:

Advantages of obtaining a pool of IPv6 addresses from LACNIC

1. Independence from the Internet Service Provider (ISP): By obtaining a pool directly from LACNIC, you will not be tied to a specific provider. This means you can change ISPs without needing to get a new block of IP addresses.
2. Full control over your IP addresses: You will have full control over the administration and assignment of your IP addresses, which can be beneficial if you need more granular or personalized management.
3. Compliance with policies and regulations: By obtaining IP addresses from a regulatory body such as LACNIC, you can ensure that you comply with all policies and regulations related to the use of IP addresses in the Latin America and the Caribbean region.

Disadvantages of obtaining a pool of IPv6 addresses from LACNIC

1. Requirements and assignment procedures: LACNIC may have specific requirements and assignment processes that you must comply with to obtain a pool of IPv6 addresses. This may require additional time and resources compared to simply obtaining IP addresses from your ISP.
2. Associated costs: Obtaining IP addresses from LACNIC may involve additional costs, such as membership fees or fees for the use of IP addresses. You should consider these costs in your budget.
3. Management Complexity: Managing an IPv6 address pool on your own can be more complex than simply relying on your ISP to manage IP addresses. You must ensure that you have the necessary resources and expertise to effectively manage your IP addresses.

Botton line

Obtaining a pool of IPv6 addresses from LACNIC may be preferable if you value independence from the ISP, full control over your IP addresses, and compliance with policies and regulations.

However, you must also consider the requirements, costs and complexities associated with managing your own IP addresses.