Subj : This happens when ISPs ignore IPv6
To   : Joe Delahaye
From : Markus Reschke
Date : Sun Feb 21 2016 19:25:18

Hello Joe!

Feb 21 13:00 2016, Joe Delahaye wrote to Markus Reschke:


 JD> From my TP-Link C8  router IPv6 Status

 JD> LAN 
 JD> IPv6 Address Assign Type: 
 JD> DHCPv6 Server 

 JD> IPv6 Address: 
 JD> 2607:f2c0:f00e:4200:62e3:27ff:fe39:46d6/64 

 JD> Link-local Address: 
 JD> fe80::62e3:27ff:fe39:46d6/64 

 JD> in the setup I have this

 JD> Get IPv6 Address Way: Get IPv6 prefix delegation

 JD> IPv6 Address Assign Type: DHCPv6 Server

I see. But there's something fishy. Your PC's link-local address is  fe80::f9e0:b9ff:6166:c8ef and I missed the point that the assumed modified EUI-64 doesn't start with 02 and the middle part isn't ff:fe. The same with your router's link-local address. An automatic link-local address should be based on the modified EUI-64 format of the MAC address. Of course you can configure it also manually. Another point is that the interface parts of the link-local address and the DHCPv6 assigned address are the same. I haven't seen that yet. Do the MAC addresses of your PC and router start with 00?

Regards,
Markus

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 * Origin: *** theca tabellaria *** (2:240/1661)

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