From: Pancho.Jones@protonmail.com   
      
   On 12/27/25 23:25, Theo wrote:   
   > Jim Diamond  wrote:   
   >> 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.   
   >>   
   >> 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.)   
   >>   
   >> I can't imagine what I did to make one of my Pis want to (try to) netboot.   
   >>   
   >> Has anyone here seen this, and, if so, know what grievous sins I have   
   >> committed to make this happen?  And how to make it stop?   
   >   
   > Is this two IPv4 addresses?  Having multiple IPv6 addresses is completely   
   > routine.  As is having one IPv4 and one or more IPv6s.   
   >   
      
   Yes, I have recently been experimenting with IPv6.   
      
   IPv6 uses:  Static Addresses, Link-Local, DHCPv6, Router Advertisements,   
   and SLAAC.  Proving me with multiple, often random, IPv6 addresses. This   
   totally broke my IP rule based routing.   
      
   Unlike my Linux machines, My Android devices take a whole IPv6 block   
   (prefix delegation). I think I'll change all my Linux hosts to this too.   
   I quite like the protection of random addresses, but want them   
   constrained to a recognisable range for each host.   
      
   Some websites fail, some apt repos fail under IPv6.   
      
   IPv6 seems like a world of pain.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)