SCTP_SCOPE_UNUSABLE 503 net/sctp/bind_addr.c if (SCTP_SCOPE_UNUSABLE == addr_scope) SCTP_SCOPE_UNUSABLE 562 net/sctp/bind_addr.c return SCTP_SCOPE_UNUSABLE; SCTP_SCOPE_UNUSABLE 387 net/sctp/protocol.c retval = SCTP_SCOPE_UNUSABLE;