Subj : Re: Help?
To   : Markus Reschke
From : Nicholas Boel
Date : Thu Feb 26 2015 17:32:16

Hello Markus,

On 26 Feb 15 11:29, Markus Reschke wrote to Nicholas Boel:

 NB>> So according to the above, I shouldn't have two addresses, right?

 MR> No, that means PE isn't the cause of your two addresses.

Okay.

 NB>> scopeid 0x0<global>
 NB>>         inet6 fe80::207:e9ff:fe49:6711  prefixlen 64  scopeid
 MR>                          ^     ^^ ^^

 MR> This is the MAC based EUI-64. You have a fffe in the middle and the
 MR> 2nd bit of the first byte is set.

Yup. But why it my machine making the associated v6 address a temporary one and giving me another address entirely?

 MR> Another cause for the two public addresses could be a broken
 MR> configuration of SLAAC and DHCPv6.

I'm not exactly sure where I would have done that. I use a basic dhcpcd, meaning I haven't changed anything. And my router doesn't seem to be forcing v6 addresses at me, and I haven't configured it to do so whatsoever. I use a he.net tunnel, and have opened a couple ports for my BBS/mailer/server machine for one specific v6 address (the one that uses my MAC address.

So with that said, I'm completely confused as to why I have two addresses on that machine when I didn't configure anything to do it. It seems my Archlinux VM has had the same single v6 address ever since I started toying with it. Seems to me that my Gentoo machine is trying to deprecate the MAC-based v6 address and use this new one..?  I don't want it to do that! :)

Regards,
Nick

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