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IPv6 Address Notation

Y

yRuN82

Junior Member
I'm working on strengthening my IPv6 skills, and I have a question I would like to pose to the group...

What is the significance of the "1" that precedes fe80 in the following link local address?

1:fe80::4239:9231:7765:9A20

Also, since the FFFE was excluded in my example, does my example IPv6 address represent a non-Ethernet card reference? Perhaps, a wireless?

Any help would be greatly appreciated.

- Namev
 
I don't think the preceding "1" should be there.
It's not part of the addressing scheme.

You're correct that if FFFE is not seen, the address was not derived from EUI-64, but other means such as DHCPv6 or SLAAC...it has nothing to do w/ wireless.
 
Compare your NIC's MAC address to your v6 address.
That is a method for automatically generating an address.
 
ScottMac said:
and I think the "1:" was the interface number, FWIW
Click to expand...

me too...FE80 should be the start of any link local address really. I am not an expert by any means, but seeing FE80 = link local to me. I have never seen anything prefixed to that.
 
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