void copyPacketData(int offset, void *dest, int size) const { memcpy(dest, (char *)ipHeader + offset, size); }
void copyPacketData(void *dest, int offset, int size) const { memcpy(dest, (char *)ipHeader + offset, size); }
        void copyPacketData(int offset, void *dest, int size) const        {                memcpy(dest, (char *)ipHeader + offset, size);        }