KEA is still a mess IMHO

[OPNenthu]

Sorry guys, it's not a safe bet that there will always be an EUI-64 address present.  I agree there will be a stable address, but it can be what's known as a 'stable privacy' address not related to the MAC and thus not able to be guessed by Dnsmasq.

For example:

Code Select Expand

3: enp10s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
    link/ether 24:xx:xx:xx:77:cd brd ff:ff:ff:ff:ff:ff
    inet 172.21.30.100/24 brd 172.21.30.255 scope global dynamic noprefixroute enp10s0
       valid_lft 77087sec preferred_lft 77087sec
    inet6 fd5a:xxxx:xxxx:1003:5dec:dd53:a78e:2964/64 scope global temporary dynamic
       valid_lft 86375sec preferred_lft 76947sec
    inet6 fd5a:xxxx:xxxx:1003:xxxx:610f:948:xxxx/64 scope global dynamic mngtmpaddr noprefixroute
       valid_lft 86375sec preferred_lft 86375sec
    inet6 fe80::xxxx:xxxx:xxxx:xxxx/64 scope link noprefixroute
       valid_lft forever preferred_lft forever

The management address here ("mngtmpaddr") does not have the signature "ff:fe" bits in the host part and the 'tmp' in the name gives it away.  The host is using this:

You cannot view this attachment.

"EUI64" is the other option on the drop-down menu, but they are mutually exclusive.

[Monviech (Cedrik)]

Can we let this thread die now please? Its not about KEA anymore. For general discussions about IPv6 please open a new thread.

Since I develop a lot in the current KEA implementation I'd like actionable tickets that can be solved.

Thank you :)

[JamesFrisch]

All my servers use SLAAC. The addresses are stable unless I change the MAC address of the server for some reason. I can then point Caddy (or NginX in your case) at these addresses. DHCPv6 is rarely needed.

Interesting, I thought that I had changing IPv6, but that was in the beginning of my journey. So maybe I looked at the privacy extended IPv6 back then. So in theory, I could ditch DHCPv6, and go with SLAAC only you think?

Hmm... I have to think about that, I quiet liked to have 10.10.50.4 and 2000:2000:2000:50::4 for simplicity.

[nero355]

Can we let this thread die now please? Its not about KEA anymore. For general discussions about IPv6 please open a new thread.

Why not just move it to the General Discussion sub-forum ?!

[lilsense]

Pardon me for my ignorance, but isn't all of that besides the point?

If indeed two devices in the same broadcast domain do have the same MAC for whatever reason, you will be out of luck anyway, because both will use the same ethernet header and that is independent of IPv4 with ARP or IPv6 with NDP.

Sure. Obviously you can replace the PC and move that dupe PC to another network or tell the OS to use a diff MAC. The point here was the when running SLAAC the end user may not know how to correct the dupe IP.