优化

README.md

@@ -20,7 +20,7 @@
 
 ```bash
 sudo apt update
-sudo apt install build-essential golang libpcap-dev libcap-dev libsystemd-dev
+sudo apt install build-essential golang libpcap-dev libcap-dev libipset-dev libsystemd-dev
 ```
 
 在 Centos 7 系统上安装所需的开发工具和库：

cap.c

@@ -175,7 +175,7 @@ void packet_handler(u_char *args, const struct pcap_pkthdr *header, const u_char
             if (p == NULL) {
                 _printf(RED "%s %s\n" REDEND, src_ip, command_result);
                 r = add_ip_to_ipset(RULE_NAME, src_ip);
-                _printf("add_ip_to_ipset %d\n", r);
+                _printf("add_ip_to_ipset() return %d\n", r);
             }
             
             free(command_result);