DHCP and static DNS not work (ModemManager)

[cantcode89]

Hello
i have a wwan card (FM350-GL) that give the ipv6, ipv6-pd and gwateway over dhcp but the dnsv6 only over a at command
My ModemManager output mmcli -b 1

  ------------------------------------
  IPv6 configuration |         method: dhcp
                     |         prefix: 0
                     |            dns: 2a01:0860:0000:0300:0000:0000:0000:0053, 
                     |                 2a01:0860:0000:0300:0000:0000:0000:0153
  ------------------------------------

the interface is setup ok only the dns is missing