Help with UDP data handler

I posted this as part of a different question and nobody answered so I 
will try again as it's own topic.

I have opened a udp socket with a datahandler.
I opened a second udp socket for sending multicast data when values change.
I get a connection, read from client, write back to client.
I get another connection. It does not go to the datahandler.
The main loop runs and multicast data continues to send properly.

What am I missing?

-- code --
     if (!udp_open(&tsock, LOCAL_PORT, 0, 0, dataHandler))
     {
         printf("udp_lst_open failed!\n");
         exit(0);
     }
     else
     {
         printf("Listener %s:%d\n",MY_IP_ADDRESS,LOCAL_PORT);
     }
     if (!udp_open(&usock, MBUS_PORT, resolve(MBUS_ADDRESS), MBUS_PORT, 
NULL))
     {
         printf("udp_open failed!\n");
         exit(0);
     }

...

     while (1)
     {
         idleProcessing();     // where values are processed and 
multicast data is sent as needed.
         tcp_tick(NULL);
     }

...

int dataHandler(int event, udp_Socket *s, ll_Gather *g, 
_udp_datagram_info *udi)
{
     int status;
    char cip[20];
    CARDMSG_S *pkt;
    if(handleUdp)             // stops recursion, does not effect 
handler death
        return 1;
    handleUdp=1;
     if(event == UDP_DH_ICMPMSG)     // from the example
    {
         return 1;
    }
     memset(&replyMsg, 0, sizeof (REPLYMSG_S));
     xmem2root(pktbuf, g->data2, g->len2);
     if(g->len3>0)
         xmem2root(pktbuf+g->len2, g->data3, g->len3);
    pkt=(CARDMSG_S*) &pktbuf;
    inet_ntoa( cip, udi->remip);
    printf("%s:%u Slot %d Type %d Device %d Offset %x Width %x Data %lx 
%lx\n", cip, udi->remport, pkt->cSlot, pkt->cOperation, pkt->cDevice, 
pkt->cOffset, pkt->cDataWidth, pkt->sData.longs[1], pkt->sData.longs[0] );
    status = process_packet(pktbuf);
     replyMsg.eStatus = status;
    printf("Status: %x\n", status);
     udp_sendto(s, (char*) &replyMsg, sizeof(REPLYMSG_S), udi->remip, 
udi->remport);     // straight from the
// even tried this but it does not help either. Returns 1 for NULL or 
bytes recv'd for the incoming socket.
    printf("Sent response %u\n", tcp_tick(NULL));
    handleUdp=0;
     return 1;
}