IPV6 With TP-Link Router

Help Community Help
4

Thanks Bucking_Horn & deHakkelaar (I'm not allowed mentions yet :smiling_face_with_tear:) -

TBH I was worried what response I might get, but this really help clarify things I didn't know about IPv6. I didn't realize that clients created the back half of the address and it makes a lot more sense seeing the settings on the router and how Pi-hole is handling everything.

I guess I got caught up in the Pi-hole system settings > DHCP server metrics where it says:

|Allocated / pruned IPv4 leases:|22 / 0|
|Allocated / pruned IPv6 leases:|0 / 0|

When I ran the discover command I got a good response (from what I can tell):

apologies for X redactions

Scanning all your interfaces for DHCP servers and IPv6 routers
Timeout: 6 seconds

* Received 136 bytes from fe80::4747:XXXX:XXXX:XXXX @ eth0
  Hop limit: 64
  Stateful address conf.: No
  Stateful other conf.: Yes
  Mobile home agent: No
  Router preference: Medium
  Neighbor discovery proxy: No
  Router lifetime: 1800 s
  Reachable time: N/A
  Retransmit time: N/A
  - Prefix: 2600:XXXX:XXXX:XXX::/64
    Valid lifetime: 296 sec
    Preferred lifetime: 296 sec
    On-link: Yes
    Autonomous address conf.: Yes
  MTU: 1500 bytes (valid)
  Source link-layer address: XX:XX:XX:XX:XX:XX
  Recursive DNS server 1/4: 2600:1700:XXXX:XXX:XXXX:XXXX:XXXX:XXXX
  Recursive DNS server 2/4: 2600:1700:XXXX:XXX:XXXX:XXXX:XXXX:XXXX
  Recursive DNS server 3/4: fe80::XXXX:XXXX:XXXX:XXXX
  Recursive DNS server 4/4: fe80::XXXX:XXXX:XXXX:XXXX
  DNS server lifetime:296 sec

* Received 56 bytes from fe80::XXXX:XXXX:XXXX:XXXX @ eth0
  Hop limit: 64
  Stateful address conf.: No
  Stateful other conf.: Yes
  Mobile home agent: No
  Router preference: Medium
  Neighbor discovery proxy: No
  Router lifetime: 1800 s
  Reachable time: N/A
  Retransmit time: N/A
  - Prefix: 2600:1700:XXXX:XXX::/64
    Valid lifetime: 300 sec
    Preferred lifetime: 300 sec
    On-link: Yes
    Autonomous address conf.: Yes
  Source link-layer address: XX:XX:XX:XX:XX:XX

* Received 56 bytes from fe80::XXXX:XXXX:XXXX:XXXX @ eth0
  Hop limit: 64
  Stateful address conf.: No
  Stateful other conf.: Yes
  Mobile home agent: No
  Router preference: Medium
  Neighbor discovery proxy: No
  Router lifetime: 1800 s
  Reachable time: N/A
  Retransmit time: N/A
  - Prefix: 2600:1700:XXXX:XXX::/64
    Valid lifetime: 300 sec
    Preferred lifetime: 300 sec
    On-link: Yes
    Autonomous address conf.: Yes
  Source link-layer address: XX:XX:XX:XX:XX:XX

* Received 311 bytes from 19X.XXX.XX.XX @ eth0
  Offered IP address: 19X.XXX.XX.XXX
  Server IP address: 19X.XXX.XX.XX
  Relay-agent IP address: N/A
  BOOTP server: (empty)
  BOOTP file: (empty)
  DHCP options:
   Message type: DHCPOFFER (2)
   server-identifier: 19X.XXX.XX.XX
   lease-time: 43200 ( 12h )
   renewal-time: 21600 ( 6h )
   rebinding-time: 37800 ( 10h 30m )
   netmask: 250.XXX.XXX.X
   broadcast: 19X.XXX.XX.XX
   domain-name: "lan"
   ntp-server: 19X.XXX.XX.XX
   dns-server: 19X.XXX.XX.XX
   dns-server: 19X.XXX.XX.XX
   dns-server: 19X.XXX.XX.XX
   router: 19X.XXX.XX.X
   --- end of options ---

Received 1 DHCP (IPv4) and 3 RA (IPv6) answers on eth0

Suprisingly enough - all the clients are identified, but I also already did some Static DHCP configuration based on MAC addresses of everything.

So, based on what you both provided, and my readout, since everything is working, I should be all set and no additional changes needed?

Again thanks so much for your help and providing details that I really didn't understand about IPv6!

1 Like