New
#1
A question about MAC Address
I have always thought that a MAC Address was hardware encoded and therefore permanently fixed to that specific hardware item.
At home I have a Network Monitor installed which monitors both Ethernet and WiFi. The internal IP addresses and MAC addresses are correctly displayed by the Network Monitor for the devices using the Broadband Router and these addresses agree with those shown by the Router and the connected devices.
The ISP that I use remotely reboots the Router quite regularly, about once a week, usually over a weekend when I assume they are doing some maintenance work. The internal IP addresses have always been in the 192.xxx... range, however at the last reboot of the Router, in addition to the 192 IP addresses a new set of IP addresses appeared in the 10.xxx.... range.
As these are also internal IP addresses I was not concerned, but what I have found confusing is that the MAC addresses associated with the 10.xxx... IP addresses are different to the MAC addresses associated with the 192.xxx... IP addresses, even though they refer to the same devices connected to the same Router.
The Network Monitor is now displaying a 192.xxx... IP address with an associated MAC address and a 10.xxx... IP address associated with a different MAC address for each network device.
Is that normal...
T.