nanog mailing list archives

Re: IPv6 Address Planning


From: sdb () stewartb com
Date: Wed, 10 Aug 2005 15:55:32 +0100 (BST)



If you want to ping your customers you should probably use a /126 so
they can only use the specific address you give them. You need that
anyway if you want to route a /48 or what have you to them.

Having just done an IPv6 rollout, I went for a block of addresses which I
would use just for p2p links, split it into chunks for peers, customers
etc, then used a /126 for each link.  Seems to work fine and (I think)
seems to be what most people are doing.

BTW, there is discussion about rethinking /48s for customers in IPv6.
Thoughts?

The current recommendation for a /48 for any customer (pretty much) does
initially seem to me to be a bit wasteful, though that's perhaps because I
keep thinking in IPv4 terms.  Having said that, I think that perhaps a /48
for home users isn't _really_ necessary.  How many domestic appliances can
you connect to the net :)

StewartB

--
Stewart Bamford (Posting as an individual)
Level3 Snr IP Engineer
*** Views expressed are my own and not necessarily those of Level3 ***
Personal website  http://www.stewartb.com/


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