libpcap inject or sendpacket function error "send: message too large" or "send: bad address" about libpcap HOT 1 OPEN

"send: Message too large" can be avoided by not sending packets that are larger than the maximum packet size for the link layer on which the packet is being sent. For example, an Ethernet has a maximum packet size of 1518 bytes, if the packet being sent includes the 4-byte CRC at the end.

"send: Bad address" means that a pointer value and packet length are being passed to send() where the range of addresses starting with the pointer value and ending at the pointer value plus the pointer length minus 1 are not all in the process's address space. This is probably because the value in func_packetPointer is not a valid address or does not correspond to the beginning of a range of valid addresses of size func_sizePacketDataInt.

from libpcap.