Allow to input multiple (IPs in command/commands) from stdin

[interduo]

Problem:
Reloading of XDP many rules (8k+) takes too much time. At the end it cases Little packet loss.

I suggest to make:
[xdp_iphash_to_cpu_cmdline.c] to allow for multiple IPs in one command or aggregate multiple commands from file or - - batch command (like tc command).

Other way for resolving that could be to load the rules to another set and then change active set.

...or maybe there is another metod or resolving that problem?