A node in a segment routing version 6 (SRv6) network includes circuitry configured to transmit and receive packets in the SRv6 network with a segment routing header (SRH) that supports one or more of a Reduced mode and a Non-reduced mode, transmit via transmitted routing updates to one or more nodes in the SRv6 network which of the one or more of the Reduced mode and the Non-reduced mode are supported by the node, and receive via received routing updates from the one or more nodes their corresponding support for the one or more of the Reduced mode and the Non-reduced mode.