On Fri, 2011-03-04 at 21:42 -0800, Fred Baker wrote: > > I have a question: If the front 10 bits of one > > IPv6 address is FE80 and the middle 54 bits is > > not zero, is it link-local address? > > http://tools.ietf.org/html/rfc4291#section-2.5.6
That section contains the exact text that Yu Hua bing quoted from the RFC. I'm not sure that it answers his question. Does it? My guess is that having any bits set in that 54-bit region makes an address technically "not a link-local address". On the other hand, I wonder how many implementations do more than check the first ten bits... Regards, K. -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Karl Auer ([email protected]) +61-2-64957160 (h) http://www.biplane.com.au/kauer/ +61-428-957160 (mob) GPG fingerprint: DA41 51B1 1481 16E1 F7E2 B2E9 3007 14ED 5736 F687 Old fingerprint: B386 7819 B227 2961 8301 C5A9 2EBC 754B CD97 0156
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