YANG Modules 2026-03-25 2026-09-24 See the "OSPF Router Functional Capability Bits" registry. New values must not be directly added to the "iana-ospf-functional-cap-bits" YANG module. They must instead be added to the "OSPF Router Functional Capability Bits" registry in the Open Shortest Path First (OSPF) Parameters registry group. Module: iana-ospf-functional-cap-bits@2026-01-28.yang