Yealink All Models DHCPv6 DUID

[GeorgSchwarz]

Hi!

For those who are concerned:

Yealink phones generate their DHCP DUID based on very first boot-up-time + MAC address.
However with ISC DHCP (the one we are using) you can make a MAC-based reservation as the phone reports the Time+MAC style to the DHCP server and the server subsequently allows reserving using the MAC-address:

<snip>

host 0315232251018 {
hardware ethernet 00:15:65:4a:9f:b3;
fixed-address6 2001:db8:c::215:65ff:fe4a:9fb3;
}

</snip>