Dhcpcd-5.5.6: Identifying Android Devices on Network
Vendor Identifier in DHCP Request
When a device connects to a network, it sends a DHCP request to obtain an IP address. The DHCP request includes a vendor class identifier (VCI) that identifies the type of device making the request. For example, MSFT 5.0 is the VCI for Windows computers, while dhcpcd-5.5.6 is the VCI for Android devices.
Identifying Android Devices
If you encounter a device with the vendor class identifier dhcpcd-5.5.6 on your network, it is likely an Android device. This information can be useful for network administrators in identifying and managing Android devices on their networks.
Troubleshooting Connectivity Issues
It's important to note that if you are on a network that forces a login page or splash page, Microsoft's detection test for DHCP will fail. This is because the detection test assumes that the device is connected directly to the internet, without any intervening authentication pages.
Customizing Device Fingerprinting
In some cases, network administrators may want to customize the device fingerprinting settings on their routers. This can be achieved by navigating to the router's configuration page and selecting the "Security" and "Device Fingerprinting" options. Under the "Client Identity" section, administrators can create new Predefined settings and specify the vendor class identifiers for specific device types, such as Windows, Android, or iOS.
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