IPPROTO_UDP       251 src/dps8/udplib.c     int sock = socket (AF_INET, SOCK_DGRAM, IPPROTO_UDP);
IPPROTO_UDP       895 src/simh/sim_sock.c hints.ai_protocol = ((opt_flags & SIM_SOCK_OPT_DATAGRAM) ? IPPROTO_UDP : IPPROTO_TCP);
IPPROTO_UDP       911 src/simh/sim_sock.c     hints.ai_protocol = ((opt_flags & SIM_SOCK_OPT_DATAGRAM) ? IPPROTO_UDP : IPPROTO_TCP);