Setting static IPv4 and IPv6 static addresses for a MAC

Feature Requests Closed or Out Of Scope
1

On Pihole I'm able to attribute a domain name and a static IPv4 address for each device on my LAN based on its MAC. But I can't find out how to attribute IPv6 addresses (link-local, ULA and global) to them.

When there's already a record for a MAC, Pihole doesn't let me add another one to try to set IPv6 to it.

I'm still pending find out how to delegate IPv6 global prefix to Pihole/dnsmasq using DHCP-PD, because I'm moving my router to OpenWRT, but while that's not done I'd like to set static link-local and ULA to devices, so I can attribute local domain names to them.

2

IPv6 does not use MAC addresses.

1 Like
4

IPv6 replaces the burned in MAC with a generated DUID. Because of the privacy features built in to IPv6 the identifiers may be randomized on each boot of the client.

1 Like
5

Oh I didn't know about it!

So in place of using a MAC I need to place a DUID, and then attribute a domain name to it?

Sorry for being noob, but how in Pihole do I find devices' DUID? And how does Pihole handle global prefix with DHCP-PD and ULA?

Yesterday I started working on my new OpenWRT router and its DHCP+DNS server is working fine in setting IPv6 global and ULA addresses. Is it worth setting it to delegate DHCP-PD global prefixes do Pihole's dnsmasq to do the distribution? Or should I let OpenWRT do the job and leave Pihole only for DNS resolving?

6

If you're delegating prefixes then best is just let the router do what it does better. ULA is fine on Pi-hole, just enter the subnet and length in the box provided.

1 Like
7

Indeed, I disabled DHCP on pihole and just let OpenWRT's do it. It's just easier that way.

I was also able to edit OpenWRT's dnsmasq to advertise Pihole as DNS resolver to my LAN, I'm almost sure it's working.