Dynamic IP means that every time you go online, the domain name you provide will be randomly assigned an IP address by the server, which is often temporarily changed. Dynamic IP is an address obtained from a dynamic host configuration protocol server. The server assigns the device a dynamic IP address, subnet mask, default gateway and DNS server. When an Internet-enabled device tries to connect to the network, the server will provide a dynamic address. Therefore, dynamic IP addressing is automatic, which also makes network management easier.

The emergence of dynamic IP is to make up for the shortage of IP resources, because the assigned IP addresses are random, so it is faced with the problem of worrying stability, which is easy to cause dropped calls and unstable network. But for some crawler workers, random IP addresses are very helpful for their work, which can help break through the restrictions of target websites and get more information.

For crawler workers, dynamic IP is very easy to use, but the quality must be very good to improve work efficiency.