DHCP-PD support in mobile (LTE/5G) networks

To continue the discussion started here, I wonder if anyone has an experience with a mobile network (LTE/5G) supporting DHCPv6 Prefix Delegation.

If you happen to have such a SIM card connected to your Turris router, can you please share output of command ifstatus wan6? Also, please share how hard is to obtain such a SIM card.