Programming :: App Not Seeing BootP Response

I am working on a BootP application and am sending out the requests just fine. I create a socket and bind then select onit for the response but my application does not seem to see the response come in. Running tcpdump I see the response packet come in and lsof shows me my app is listening on eth correct port. what I may be doing wrong here?

I am not getting any errors and create and bind the socket as:

fd = socket(PF_INET, SOCK_DGRAM, 0); //IPPROTO_UDP);
/* setup sockaddr_in struct */
memset((char *) &sa, 0, sizeof(struct sockaddr_in));
sa.sin_family = PF_INET;

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