Operation not permitted Bug

[karmelyoei]

I have this error, could you please help me to fix this, I am using this code

  arp.setInterface(netinterface);
  arp.poison(targetip, gatewayip);

and is there any way to run the arp.posion without going to the root?

[skepticfx]

@karmelyoei,

To inject ARP packets, you'd need administrator privileges. Could you try again by running as an administrator?

[karmelyoei]

Okay I will thank you, I have another question is there any way we can know that the host device has been blocked after we poison it ?

[karmelyoei]

Can we poison multiple devices (multiple targets IP)?