dccp: options and features

*** 141,151 ****
  getportname(int proto, in_port_t port)
  {
          const struct porttable *p, *pt;
  
          switch (proto) {
!         case IPPROTO_SCTP: /* fallthru */
          case IPPROTO_TCP: pt = pt_tcp; break;
          case IPPROTO_UDP: pt = pt_udp; break;
          default: return (NULL);
          }
  
--- 141,152 ----
  getportname(int proto, in_port_t port)
  {
          const struct porttable *p, *pt;
  
          switch (proto) {
!         case IPPROTO_DCCP: /* fallthru */
!         case IPPROTO_SCTP:
          case IPPROTO_TCP: pt = pt_tcp; break;
          case IPPROTO_UDP: pt = pt_udp; break;
          default: return (NULL);
          }