[arin-ppml] IPv6 Transition Policy (aka Soft Landing)

Joe Maimon jmaimon at chl.com
Sun Oct 10 14:49:07 EDT 2010

Owen DeLong wrote:
> On Oct 10, 2010, at 9:53 AM, Joe Maimon wrote:
> APIPA doesn't work for meaningful regular internet communications. You can't deploy an
> enterprise numbered with APIPA. Suggesting it as an alternative for SLAAC is like
> suggesting RIP as an alternative for BGP in the network core.
> Owen

Apipa is an example of auto configuration with dad. In 16 bits. Shining, 
it is not. Functional, it is.  It is part of zeroconf which comes with 
multicast DNS as well as other things. Apple makes extensive use of 
this. It is obviously not intended for a routed managed environment, 
useful only on an ad-hoc basis.

apipa is judged to only be useful when no routing is available, by way 
of static configuration or dhcp on that interface. In that same vein, 
slaac is a useless bit of technology when presented with the ubiquitous 
coupling of dhcp servers inside of routers.

In my view 64 bit subnet sizing hard coded in standards and protocols is 
a mistake. It should be fixed if possible, or it can be made irrelevant 
by subsequent technology, such as DHCP.


More information about the ARIN-PPML mailing list