goetz#RFC9762 support for the P flag has landed in #odhcpd and soon in #OpenWrt
https://github.com/openwrt/odhcpd/pull/301
Thank you!
odhcpd: Implement RFC9762 DHCPv6 PD Preferred flag for PIOs by systemcrash · Pull Request #301 · openwrt/odhcpd
The RFC defines the P flag for use within PIOs, and defines its meaning as "purely a positive indicator, telling nodes that DHCPv6 PD is available and the network prefers that nodes use it&quo...