Describe the bug
This documents PR #575 which was submitted by @GabrielGanne

To Reproduce
Steps to reproduce the behavior:

1. install gcc version 10
2. build

Expected behavior
no warnings

Actual behavior
A cast-function-type warnings caused by libpcap
In my opinion, the code calling libpcap is valid, and the warning can safely be ignored.

Another saying that the <sys/sysctl.h> header is deprecated and will be removed.

System (please complete the following information):

• OS: TBD
• Tcpreplay Version 4.3.2