Stream Control Transmission Protocol (SCTP) support depends on operating system Radiator runs on. When the OS supports SCTP, you can configure Radiator to use one-to-one style sockets.

If you install Radiator's Radius::UtilXS package for SCTP extended API support, SCTP multihoming is automatically enabled for Stream based clauses, such as AuthBy RADSEC and ServerDIAMETER. Multiple addresses configured with parameters BindAddress, LocalAddress and SCTPPeer are used with the extended API to bind and connect to all addresses with one call.

Radiator's Radius::UtilXS package is available from the same location where you can download Radiator from. See Section 2.1.9. Radiator Radius::UtilXS for more information. Availability of SCTP extended API is logged during radiusd startup when logging level is set to debug (Trace 4 or higher number).