Luci: QMI IPv6

Observed with the latest snapshot:

when LTE modem is configured through luci-proto-qmi, the following line is not added to the configuration:

option pdptype 'ipv4v6'

Since the QMI connection script (/lib/netifd/proto/ is looking for pdptype, IPv6 connection could not be established.

I can add this option. Do you know which possible values there are for this option?

Name	Type	Required	Default	Description
pdptype	string	no 			IP 		Used IP-stack mode, IP (for IPv4), IPV6 (for IPv6) or IPV4V6 (for dual-stack)

Does this need to be added to luci-proto-qmi?

yes, please