Subject: Re: Allowing ifconfig to automatically fill in IPv6 host ID
To: Hubert Feyrer <email@example.com>
From: None <firstname.lastname@example.org>
Date: 03/26/2002 12:36:55
>> >How about merging it into ifconfig?
>> > ifconfig fo0 inet6 prefix 1:2:3:4::
>> i don't like it... use script or whatever to grab 64bit interface
>Which raises the question how one gets that interface id?
>I know how to calculate it for Ethernet MAC, but don't know for other
>media types... is there some interface to retrieve the EUI64 ID?
it really depends on your goal. if you just need some value,
random number (with universal/local bit turned off) works just fine.
otherwise, you can borrow it from other ethernet interface.
RFC2472 section 4.1 is an excellent description about this.