From: zsd@jdvb.ca   
      
   On 2025-12-29 at 06:59 AST, Richard Kettlewell  wrote:   
   > Jim Diamond  writes:   
   >> Richard Kettlewell  wrote:   
   >>> Jim Diamond  writes:   
   >>>> I was looking at my network and discovered an IP which I didn't know   
   >>>> about; after a few seconds of investigation I discovered that one of   
   >>>> my Pis (which is on wifi only, and only has one wifi card) has two   
   >>>> IPs.   
      
   >>> Where are you finding the two addresses?   
      
   >>> What does   
   >>>   ip addr show   
   >>> display?   
      
   >>>> Two of my other Pis are running the same version of Raspberry Pi OS   
   >>>> (i.e., "Debian GNU/Linux 12 (bookworm)").  They don't do this.   
      
   >>>> Looking around the net, there are claims that this is because Pis   
   >>>> might try to netboot, and that later on in the boot process they also   
   >>>> get their usual IP the "usual" way.  (In my case I am using   
   >>>> networkmanager.)   
      
   >>> What does   
   >>>   rpi-eeprom-config   
   >>> display?   
      
   >> BOOT_UART=0   
   >> WAKE_ON_GPIO=1   
   >> POWER_OFF_ON_HALT=0   
      
   > What model of Pi is it?   
      
   RPi 4 (4 GB version).  More specifically, /proc/cpuinfo says   
            Raspberry Pi 4 Model B Rev 1.1   
      
   >> (Nothing there about BOOT_ORDER, altho my Pi5 (not the computer that showed   
   >> up with two IPs) does have BOOT_ORDER=0xf461.  But it would appear I'd need   
   >> a 0x2 in there fairly early for it to try a netboot.)   
      
   > Elsewhere:   
      
   >> No, the Pi thought two IPs were associated with the one and only wifi   
   >> card.  (In fact, I discovered which device it was by ssh-ing in after   
   >> nmap told me that it was listening on the sshd port.)   
      
   > i.e. the interface has two addresses after booting has completed.  I   
   > would put network boot at the bottom of the list of possible causes.   
   > AIUI the kernel starts from a blank slate, it doesn’t inherit interface   
   > configuration from the boot loader.   
      
   The main reason I suggested that was because when I went hunting around the   
   internet, that was the only thing I came across.  I'm not stuck on that   
   idea, but so far it is the only suggestion I've seen.   
      
   Cheers.   
                                   Jim   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)