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Now I want to write a server - client program to send message between them. I want to use SOCK_RAW and IPPROTO_RAW to send so I don't want to use TCP/IP protocol. At server-side, I use libpcap to capture packet from the client. And I have two questions:<br />
1. In sendto() function, there's parameter &quot;const struct sockaddr *to&quot;, if I just want to send to a defined Mac address (ignore the IP address), what info I must supply here?<br />
2. In case we broadcast the message, there're 2 network interface cards, how can I choose exactly what NIC will send out the message, other one will not send out any.<br />
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Thanks for your answers.
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Now I want to write a server - client program to send message between them. I want to use SOCK_RAW and IPPROTO_RAW to send so I don't want to use TCP/IP protocol. At server-side, I use libpcap to capture packet from the client. And I have two questions:
1. In sendto() function, there's parameter "const struct sockaddr *to", if I just want to send to a defined Mac address (ignore the IP address), what info I must supply here?
2. In case we broadcast the message, there're 2 network interface cards, how can I choose exactly what NIC will send out the message, other one will not send out any.

Thanks for your answers.

send message through socket?

Now I want to write a server - client program to send message between them. I want to use SOCK_RAW and IPPROTO_RAW to send so I don&#39;t want to use TCP/IP protocol. At server-side, I use libpcap to capture packet from the client. And I have two questions:
1. In sendto() function, there&#39;s parameter &quot;const struct sockaddr *to&quot;, if I just want to send to a defined Mac address (ignore the IP address), what info I must supply here?
2. In case we broadcast the message, there&#39;re 2 network interface cards, how can I choose exactly what NIC will send out the message, other one will not send out any.

Thanks for your answers.

Kernel programming for Linux operating systems can be done with many different languages; C, C++, Python, Perl and Java, which are some of the most common languages used.There are also many different varieties of Linux, such as Ubuntu, Fedora and OpenSUSE.