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    void ast_enable_packet_fragmentation(int sock)
    {
    
    #if defined(HAVE_IP_MTU_DISCOVER)
    
    	int val = IP_PMTUDISC_DONT;
    	
    	if (setsockopt(sock, IPPROTO_IP, IP_MTU_DISCOVER, &val, sizeof(val)))
    		ast_log(LOG_WARNING, "Unable to disable PMTU discovery. Large UDP packets may fail to be delivered when sent from this socket.\n");
    
    #endif /* HAVE_IP_MTU_DISCOVER */