Yes this is quite normal, which is why I prefer to set up reserved IP addresses for my devices, helps me keep track of any events.
Also if the IP Address (of a wireless priner) keeps on changing it can also present a problem with some wireless printer drivers at the PC end. Reserved IP Address solves this too.
Sorry, let me clarify.
DHCP servers usually give out IP addresses consecutively, by that it's predictable, range starts at .10, first client gets .10, next client gets .11. This was just giving out any random IP address from the pool.
This is unneccessary for home routers, first one I've come across which does this, and causes great confusion such as when you connect a device to your network.
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