Temporary vs permanent/secured IPv6

My Home Assistant OS (Raspberry Pi) has received two public IPv6 from my home router.

Now, I would like to understand which one of the two is the permanent and which one is the temporary. Normally, one can see this by issuing ifconfig on the command line for example and it would be visible. Example on my computer:

Unfortunately, I can’t seem to access the command line of Home Assistant OS, only of the container (core).