[SOLVED - moved to GH] - DHCP v6 - VLAN priority not honored?

[reneh]

I am running the -excellent- Opnsense 22.7.11_1-amd64 release.
My ISP requires all WAN communications on VLAN 832 and the use of VLAN priority/DSCP CS6 for all control comms like DHCP and CS0 for the rest. I have configured the 'Use VLAN priority' field in the DHCP v6 config as 'Internetwork Control (6)'.

Capturing the network traffic on the interface shows that all DHCP v6 related comms from the firewall to the ISP router does not seem to honor  the DSCP CS6 setting, whilst all related comms back from the ISP is tagged as CS6.

Anybody any idea what the cause of this is?

Many thanks for the help!

[reneh]

moved this to Github https://github.com/opnsense/core/issues/6292