Difference between MAC address and IP address: MAC/IP Dual Address Management Tutorial

What's the relationship between these two addresses?

Xiaoming recently did data collection always blocked by the website, the technical brother let him change the MAC and IP address at the same time. The dude was confused on the spot:Isn't the MAC address a network card ID? Why is it still related to IP? In fact, these two are like your house number (IP) and real estate license number (MAC), one for external contact and one for device authentication.

For example, if you disguise your door number with a proxy IP, but the device fingerprint (including MAC) hasn't been changed, the website will still recognize you as the same device. It's like going to the bank wearing a mask, but wearing the same ripped jeans from yesterday, the teller recognizes you immediately.

Why do proxy IPs care about MAC addresses?

Nowadays, a lot of websites are engaged indouble-count strategyThe first one is to check the IP and the device characteristics. We have tested an e-commerce platform, a single change IP survival rate of only 34%, but with the MAC address modification soared to 82%. here to teach you three practical tips:

Hands-on dual address management

Here's a real life example using ipipgo's proxy service. Their dynamic residential IPs can be rotated automatically, and it's super easy to use with the macchanger tool:

 First get the latest proxy IP
curl "https://api.ipipgo.com/get?format=json&key=你的密钥"

 Modify the MAC address (Linux example)
sudo macchanger -r eth0 -r means generate random address

 Verify the configuration
ifconfig | grep ether
curl ifconfig.me View current egress IPs

Attention! Different systems change MAC in different ways, Windows can change it manually with Device Manager, Android needs root access. Here is a pitfall:Remember to restart network services after changing the MAC of a virtual machineOtherwise it may not be effective.

Common Pitfalls QA

Q：Why is it still blocked even if I use a proxy IP?
A: It is likely that the device fingerprint has been exposed. Check if the browser canvas fingerprint, time zone setting, MAC address have been synchronized and changed.

Q: Can I change the MAC address at will?
A: Don't mess around with the first three bits (representing the manufacturer's code), and you can make up the last three at will. For example, it is more natural to change 00:1C:B3 to 00:1C:B4

Q: Which ipipgo package is right for me?
A: Do crawlers with dynamic residences (enterprise version), you need to fix your identity to pick static residences. They have a hidden trick:When you buy the package, please note "dual-address plan", you will get the MAC modification tutorial.

Proxy Services Selection Guide

ipipgo的跨境专线实测比普通代理低40%，特别是他们的TK专线做海外业务真心稳。最近帮客户做跨境电商，用静态住宅套餐实现了：

• Each store account is bound to a separate IP segment
• MAC addresses are generated according to national laws (e.g., the U.S. uses Dell's vendor code)
• Automatically change IPs every day but keep device fingerprints consistent

Final Reminder:Don't buy a junk proxy on the cheap.The same IP may be used by dozens of people at the same time, and this kind of IP will die faster. Why don't you spend some money to buy exclusive resources, and run a steady business is really save money.