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Re: [homenet] Which IP addresses must be avoided?

otroan@employees.org Wed, 18 May 2016 08:03 UTC

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From: otroan@employees.org
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Date: Wed, 18 May 2016 10:02:58 +0200
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References: <87wpms8zvo.wl-jch@pps.univ-paris-diderot.fr> <573B4076.304@kit.edu> <87eg908mrs.wl-jch@pps.univ-paris-diderot.fr>
To: Juliusz Chroboczek <jch@pps.univ-paris-diderot.fr>
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Cc: Markus Stenberg <homenet@ietf.org>, "Bless, Roland (TM)" <roland.bless@kit.edu>
Subject: Re: [homenet] Which IP addresses must be avoided?
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Juliusz,

>> https://tools.ietf.org/html/rfc5453
>> provides an answer w.r.t. IPv6.
> 
> Do I need to avoid these addresses when assigning a /128 or a /127?

no. if you assign a /128, that is a single address, the length of the IID is zero.
the case of /127 is a little trickier, since then one end will get the subnet-router anycast address.
as long as both ends of the /127 agree, that's not a problem.

Best regards,
Ole

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