DHCP6 EUI-64 Interface ID Setting

louiseanton

My ISP only provide single /64 for each PPPoE WAN Conenction, I have tried to request different delegation size but still no luck. since I can made several PPPoE WAN Connection, I want to do the following

IGB1 with XX:XX:XX:XX:XX:01 MAC Address
WAN1 Interface IPv4 PPPoE IPv6 DHCP6 Use IPv4 connectivity as parent interface Prefix Delegation size 64
LAN1 Interface IPv4 Static IPv6 Track Interface WAN1 Prefix 0

IGB2 with XX:XX:XX:XX:XX:02 MAC Address
WAN2 Interface IPv4 PPPoE IPv6 DHCP6 Use IPv4 connectivity as parent interface Prefix Delegation size 64
LAN2 Interface IPv4 Static IPv6 Track Interface WAN2 Prefix 0

So far I can only make one of them working but never simultaneously
Its my first time trying to enable ipv6 on my network and I am not familiar at all
After digging around, I think the cause might be the EUI-64 Interface Identifier used by pfsense Kea DHCP6 (if_pppoe) when requesting the ipv6 address

Everytime I reconnect the PPPoE connection I get new ipv6 address but no matter WAN1 or WAN2 the EUI-64 part always same everytime and it always IGB1 MAC Address

WAN1 2001:xxxx:xxxx:xxxx:[IGB1 EUI-64]
WAN2 2001:xxxx:xxxx:xxxx:[IGB1 EUI-64] <- Still IGB1 MAC Address

Whenever the second WAN connect, most of the time the other WAN connection is disconnected or not workign/usable
It might be because the ISP think that the same Host/Client (Interface ID) try to make another connection

Is there any way for me to set something like custom Interface ID Identifier for each WAN interfaces?

For IPv4 connectivity as parent interface, what does the parent interface mean? are there any possibility that the interface choose wrong parent interface? both WAN1 and WAN2 choose IGB1 as parent interface?

louiseanton

I have tried System->Advanced->Networking->DHCP6 DUID->DUID-LL (aa:bb:cc:dd:ee:ff) and restart the firewall
WAN2 IPv6 that I received 2001:xxxx:xxxx:xxxx:[IGB1 EUI-64] <- Still IGB1 Original MAC Address

Related
https://forum.netgate.com/topic/199070/manually-setting-the-interface-id-in-dhcpv6-pd-over-pppoe-configuration

louiseanton

Seems like this is what I currently needed to solve my problem
https://forum.opnsense.org/index.php?topic=46607.0
https://redmine.pfsense.org/issues/14765

Bob.Dig

@louiseanton said in DHCP6 EUI-64 Interface ID Setting:

My ISP only provide single /64 for each PPPoE WAN Conenction

What ISP is this?

louiseanton

@Bob.Dig My ISP Information
AS 3462 HINET Chunghwa Telecom Co., Ltd. Taiwan
https://db-ip.com/as3462