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Re: subnet prefix length > 64 breaks IPv6?
From: sthaug () nethelp no
Date: Sun, 25 Dec 2011 11:26:08 +0100 (CET)

prefixes on the same link.  Choosing to make use of a 120-bit prefix
(for example) will do nothing to protect against a rogue RA announcing
its own 64-bit prefix with the A flag set.

I could not find any "A flag" in the RA. Am i missing something?

It's part of the Prefix Information option. See


Steinar Haug, Nethelp consulting, sthaug () nethelp no

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