From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Sat, 1 Apr 2017 02:46:53 -0700 From: Ori Bernstein To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net> Message-ID: <20170401094653.GC54181@oneeye> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.7.2 (2016-11-26) Subject: Re: [9fans] IPV6 Topicbox-Message-UUID: b83909aa-ead9-11e9-9d60-3106f5b1d025 On Sat, Apr 01, 2017 at 08:36:55PM +1100, Bruce Ellis wrote: > Does anyone know what IPV6 addresses like fec0:0:0:ffff%1 mean and how to > make a real (plan9) IPV6 address from them. > > Regards. > > brucee The portion before the '%' is a plain old (link local) ipv6 address. The part after the '%' is a zone id. It's safe to ignore. Because link local addresses share prefixes, they may need to be told what interface to come out of. They can be ignored safely enough, or if you want you use an arbitrary string like 'fe80::%/net.alt' as the zone.