DNS answer KO when OPTs in request

[Liberasys]

Hello JC, when a query has options (ex : DNSSEC options), the code reproduces it in the query section of answer. It is reproductible qith dig on linux. This leads to DNS client fuzzying.
I patched the code in order to send only the first query part and now it is working:

     def _getPacketAnswerA(packet, ipV4Bytes) :
        try :
            pos = 12
            while True :
                domPartLen = packet[pos]
                if (domPartLen == 0) :
                    break
                pos += 1 + domPartLen
            query_end = pos + 5

            return b''.join( [
                packet[:2],             # Query identifier
                b'\x85\x80',            # Flags and codes
                packet[4:6],            # Query question count
                b'\x00\x01',            # Answer record count
                b'\x00\x00',            # Authority record count
                b'\x00\x00',            # Additional record count
                packet[12:query_end],   # Query question
                b'\xc0\x0c',            # Answer name as pointer
                b'\x00\x01',            # Answer type A
                b'\x00\x01',            # Answer class IN
                b'\x00\x00\x00\x1E',    # Answer TTL 30 secondes
                b'\x00\x04',            # Answer data length
                ipV4Bytes ] )           # Answer data
        except :
            pass
        return None

[jczic]

Thank you, code updated :)