Raspberry Pi 4 / Debian : Static IP on one SSID and Dynamic on another

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SUMMARY

The discussion centers on configuring a Raspberry Pi 4 running Debian to use a static IP for one SSID while allowing dynamic IP assignment for another SSID on the same interface. Users noted that the GUI widget for WLAN settings does not function as intended, leading to all SSIDs adopting the same configuration. Modifying the dhcpd.conf file was suggested for setting static IPs, but there is uncertainty regarding the ability to configure dynamic IPs for specific SSIDs. The consensus indicates that static IPs are typically reserved for devices like printers to ensure consistent accessibility.

PREREQUISITES
  • Understanding of Raspberry Pi 4 hardware and Debian OS
  • Familiarity with network configuration concepts, specifically SSID management
  • Knowledge of DHCP and how dhcpd.conf file functions
  • Basic networking principles, including static vs. dynamic IP allocation
NEXT STEPS
  • Research how to configure dhcpd.conf for mixed static and dynamic IP assignments
  • Learn about network interface configuration on Debian using netplan or ifupdown
  • Explore Raspberry Pi networking tools and GUI alternatives for SSID management
  • Investigate best practices for assigning static IPs to network devices
USEFUL FOR

This discussion is beneficial for Raspberry Pi enthusiasts, network administrators, and anyone looking to optimize network configurations involving multiple SSIDs on Debian systems.

Swamp Thing
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My Raspberry Pi 4 has a GUI widget that is supposed to let us specify WLAN settings on a per-SSID basis, but it doesn't work. (All SSIDs end up with the same setting).

Some articles on the net say that one can modify the dhcpd.conf file with an entry headed by the SSID name and then put in static IP parameters in that section. But I couldn't find how to specify a dynamic IP for a given SSID on the same interface (and to mix static and dynamic on a per-SSID basis for a given WLAN).

How can this be done?
 
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I don't think you can dynamically allocate by altering the dhcp.conf file. It is for the static IP's only. When I did my cluster, I had to put static IP's so that everyone could see each other, and my POE swtich assigned IP's.

As for mixing static and dynamics on a network, I'd have to investigate a little. Usually statics are given to printers etc so everyone can see them all the time.

Let me cogitate a little and get back to you.
 

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