----- On Jul 9, 2015, at 4:56 PM, Naslund, Steve snasl...@medline.com wrote:

> Huh, since when does ANY application care about what size address allocation 
> you
> have?  A V6 address is a 128 bit address period.  Any IPv6 aware application
> will handle addresses as a 128 bit variable.

The DHCPv6-PD server application on your router(s) might care.

> Does any application running on IPv4 care if you have a /28 or a /29?  In fact
> the application should not even be aware of what the net mask is because that
> is an OS function to handle the IP stack.  This argument makes no sense at all
> since every application will be able to handle any allocation size since it is
> not even aware what that is.  Any IPv6 compatible OS will not care either
> because they would be able to handle any number of masked bits.  No app
> developer has ever been tied into the size of a subnet since CIDR was 
> invented.

For an application that doesn't do anything with IP addresses (allocating, 
etc.), it shouldn't matter, but that does not mean that there aren't 
applications for which it does.

-Randy

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