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Forum Discussion
ORBI RBR50 not honoring reserved IP addresses
ORBI RBR 50 running 2.3.5.30 I have configured a reserved IP for my Raspberry Pi which is a server, but every reboot, the IP address of the raspberry pi changes the mac address isn't the prob...
I need to give the raspberry pi a reserved address
One of my Raspberry Pi's was changing MAC addresses on the WiFi adapter every time it rebooted. Turns out there is a "feature" built into one of the Pi networking apps to "randomise" the MAC address. I Googled the heck out of this and eventually found a method to force the Pi to "stop this dammit". (I later decided that loading whatever software package did this was a mistake, so I downloaded a fresh copy of Pi, burned it to an SD Card, and now my Pi no longer randomizes the MAC address..)
Assigned IP's on the Orbi are by MAC address. When your Pi has a new IP, does it still have the same IP as before?
Yes, it keeps the same public IP, only the private IP changes.
Which raspberry pi and what OS did this occur on in your instance?
I observed this on a Pi 4 after I loaded a complicated home automation package that I later decided, "Who NEEDS this?" and gave up on it.
Google searches showed that one of the modules that package loaded was causing the MAC address to change randomly every time the Pi restarted. When I went back to the stock Pi image, that stopped. (The Google searches did turn up methods to prevent it, but I no longer need them.)
grify wrote:Yes, it keeps the same public IP, only the private IP changes.
I do not understand this. The Orbi assigns only private IP's to devices within the LAN. A Raspberry Pi that is connected to the Orbi should never have a "public IP". What am I not understanding?
Is there no way to fix the IP address on the Pi thing?
Some people here insist that there is no need to tell the router to reserve an IP address if the device concerned, your Pi, can also claim an IP address.
My strategy is to fix the IP address on the networked devices – printers, NAS etc – and then to reserve those addresses on the router.
This usually provokes howls of derision and scorn telling me that I am doing it all wrong and that this two-stage process is not needed if the device reserves an IP address for itself.
Then again, that is not for devices that like to change their Mac address.
michaelkenward wrote:Is there no way to fix the IP address on the Pi thing?
Yes, when I Googled "Pi changing MAC address", I found links to the specific module that was causing the change, which was supposed to be a "good thing" because it provided a weird sense of security. The module had been loaded when I installed a home automation package. There was a work-around, which did work. But I later decided to reflash my Pi SD Card and the problem "went away."
Some people here insist that there is no need to tell the router to reserve an IP address if the device concerned, your Pi, can also claim an IP address.
My strategy is to fix the IP address on the networked devices – printers, NAS etc – and then to reserve those addresses on the router.
This usually provokes howls of derision and scorn telling me that I am doing it all wrong and that this two-stage process is not needed if the device reserves an IP address for itself.
There's a difference between "not needed" and "can't hurt". Sort of like "belt and suspenders". I like to keep a record of the device each IP is assigned to. The LAN Setup table is as good a place as any.
Then again, that is not for devices that like to change their Mac address.
