programa c++ comprobar ip if_down_cmd

#include <iostream>
#include <string>
#include <cstring>

using namespace std;

int main()
{
    
    string ip1 = "192.168.1.1";
    string ip2 = "192.168.1.3";
    string ip3 = "192.168.1.3";
    
    char *c1 = strdup(ip1.c_str());
    char *c2 = strdup(ip2.c_str());
    char *c3 = strdup(ip3.c_str());
    
    string cmd = "ifdown eth0:0 && ifup eth0:0";
    
    if (strcmp(c1, c2) == 0)
    {
        system(cmd.c_str());
    }
    else
    {
        cout << "IP is the same" << endl;
    }
    
    return 0;
}