Hello, there are 8 packages in the tree using USE="sctp". Since meaning is the same I propose to add the following global USE flag: sctp - Support for Stream Control Transmission Protocol Here is the list: dev-java/icedtea:sctp - Build the SCTP NIO channel implementation against lksctp dev-lang/erlang:sctp - Support for Stream Control Transmission Protocol dev-libs/openssl:sctp - Support for Stream Control Transmission Protocol net-analyzer/netperf:sctp - Include tests to measure SCTP performance net-libs/netembryo:sctp - Support for Stream Control Transmission Protocol net-misc/iperf:sctp - Support for Stream Control Transmission Protocol net-misc/openssh:sctp - Support for Stream Control Transmission Protocol net-voip/yate:sctp - Enable SCTP sockets Best regards, Andrew Savchenko