I have set up a Guest Network (I call it work network) by following the guides from [OpenWrt Wiki] Guest Wi-Fi basics and [OpenWrt Wiki] Guest Wi-Fi extras. I also have AdGuard doing the DNS AdBlock. My Guest network gets internet connection and everything, but the devices connecting to this network only get local IPv6 it doesn't get the public IPv6, eventhough my ISP allows and the devices connecting to other network(lan-default) in the router gets public IPv6.
Am I missing something?
PS: I also faced some issue mentioned which was already discussed in some thread and the solution provided their did work for me as well,
Does the wan network have a PD prefix from the ISP that is larger than /64 (mask size smaller than 64, such as 60, 56, or 48)? In that case you can simply put an ip6assign on the second LAN and set up RA and/or DHCPv6. Users of the second LAN will have a GUA which is outside of the first LAN, but inside the overall prefix that is routed to your house by the ISP. This is how IPv6 is supposed to work.
If your ISP prefix is only /64 or there is no prefix there are workarounds such as relay mode and NAT6.
Thanks for that, I'm noob for both OpenWRT & Networking, so some of the things in your response just flying over my head . But here is what I can see, and based on the values I think I should be able to get Pubilc IP on my second LAN? not too sure, any clarification or pointing me to a article which could explain things will be appriciated.
PD on WAN6: 2400:XXXXXXXXX::/60
LAN Bridge IP: 2400:XXXXXXXXX::1/60 & fd60:XXXXXXXXX::1/60
GUEST (WORK) Bridge IP: fd60:XXXXXXXXX:10::1/60
/60 is common on cable service. It is IPv6 support, but the cable company is being stingy with addresses. Right now the lan is taking the entire prefix space that you have first, then none is available for a second lan type network.
Change the ip6assign on lan to 62. Then a 62 can also be assigned to guest. /64 can be used on networks that will never have an additional router downstream, only endpoint user devices like phones and PCs.