Is it normal for the TMHI gateway to hand over two IPv6 addresses?

Installing and Using OpenWrt
1

I am using my own router (GL-MT6000 OpenWrt) downstream the TMHI (T-Mobile Home Internet) gateway (TMO-G4AR), I have noticed that the G4AR hands over two different IPv6 address to the GL-MT6000, one is /64 and the other one is /128, is that how it is supposed to be?

I have the GL-MT6000 configured in NAT6 mode and everything works fine and all client devices (DHCP clients of the GL-MT6000) pass the test-ipv6.com test, thanks

2

Please connect to your OpenWrt device using ssh and copy the output of the following commands and post it here using the "Preformatted text </> " button:
grafik
Remember to redact passwords, MAC addresses and any public IP addresses you may have:

ubus call system board
cat /etc/config/network
cat /etc/config/wireless
cat /etc/config/dhcp
cat /etc/config/firewall