I've only recently started getting into IPv6. On top of that, I've changed ISPs. My config is nearly completely the default one, running OpenWrt 21.02.
I've noticed the following and would like to know if this is normal or if there's something wrong with my setup:
Former ISP: With the former ISP, I received a /64 IPv6 address that LUCi showed as IPv6 address on the WAN interface (as did "ip addr", "ifconfig" etc). Additionally, I received a /56 prefix that got delegated to the LAN interface and other devices.
New ISP: With the new ISP, there's no public IPv6 address on the WAN interface, only a /56 prefix from the provider. This prefix is successfully used for delegation to the LAN interface and network devices.
The rest of the configuration is identical. For the new ISP, I only needed to change PPPoE credentials.
Is this normal for some ISPs or is there something wrong here? To me it feels like the WAN interface should also have an IPv6.
Please let me know whatever information you need to help. Thanks!