Several problems encountered when compiling a program with Dev-CPP, a long time ago

1.
Compile with Dev-CPP
Error
Linker error undefined reference to 'ntohs @ 4'

Problem:
Library libwsock32.a missing

Add libwsock32.a under the lib directory to the connector parameters in the Project Properties

2.
When using the pcap_findalldevs_ex Function
Manually add
# Include <remote-ext.h>
Because it is not added to the header file.

3.
When using the socklen_t and getnameinfo functions,
Manually add
# Include <ws2tcpip. h>

4.
Error
[Linker Error] undefined reference to 'getnameinfo @ 28'

Libws2_32.a In the lib directory must be added to the connector parameters.