因特网控制讯息协议 Internet Control Message Protocol，ICMP 因特网控制协议 Internet control protocol 指定因特网IP和名称的公司 Internet corporation for assigned names and numbers ..
To allocate an Internetprotocolcontrol block, in_pcballoc() is called.
要分配 Internet 协议控制块，可调用 in_pcballoc()。
2
Recall that the Internetprotocol (IP) is the core network layer protocol that sits below the transport protocol (most commonly the Transmission Control protocol, or TCP).
The result was a suite of internetworking protocols known as TCP/IP (after the first two protocols defined by the standard, Transmission ControlProtocol and Internet Protocol).