ListenPacket listens for incoming ICMP packets addressed to address. See net.Dial for the syntax of address.
For non-privileged datagram-oriented ICMP endpoints, network must be "udp4" or "udp6". The endpoint allows to read, write a few limited ICMP messages such as echo request and echo reply. Currently only Darwin and Linux support this.
看下面的 example 里 windows 好像是不支持的.
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