Interpreting the fist two bytes of the `sockaddr` struct as `sa_family` produces incorrect behaviour on macOS and (presumbly) BSD.
This change uses both Unix and Windows socket headers to convert the libpcap provided sockaddr before duplicating it. This fixes sockaddr being always NULL on macOS/BSD and ipv6 addresses not working in general since `AF_INET6` differs on Windows(23), macOS(30) and Linux(10)
For reference https://www.ibm.com/docs/en/i/7.3?topic=family-af-inet-address and this is from the <sys/socket.h> on macOS ``` /* * [XSI] Structure used by kernel to store most addresses. */ struct sockaddr { __uint8_t sa_len; /* total length */ sa_family_t sa_family; /* [XSI] address family */ char sa_data[14]; /* [XSI] addr value (actually larger) */ }; ```
-- v5: wpcap: Convert unix sockaddr to win32 sockaddr