BI changed my LAN address - how'd that happen?

[Sybertiger]

A few days ago I notice my Pushover links created in a curl command were not working as expected and I determined that the LAN variable had changed. Sure enough the LAN address changed from 192.168.1.200 (BI computer IP address) to 192.168.0.200 (Camera network IP address). Odd since it's been working fine for years and I didn't make the change myself. So, what causes this to change on it's own? I noticed that BI Tools also had the IP address incorrectly set to the camera network's ethernet address. I had to manually change the address back to 192.168.1.200 in both BI and BI Tools.

 

[bp2008]

Are those addresses both served by the same physical network interface or separate ones? I would assume the .1 interface temporarily glitched or something long enough for programs to notice and automatically select a different interface to call primary. Could happen for example if a driver was getting updated just after a reboot so the network interface was maybe disabled temporarily while programs were starting. If they couldn't find the interface they were configured with, it would make sense for them to select a different one if required by the program logic.

 

[Sybertiger]

Two physically different NICs on two different boards. One dedicated to the home network side and the other one dedicated to the camera network side. I believe there was a power outage that may have occurred the night the problem started showing up. I don't know, maybe the time server setup somehow helped to confuse it when it powered back up or maybe the home network side was down due to the router having lost power and the system saw the camera side network was the only network up and running at the time. Weird, beats me.

 

[bp2008]

Is the home network side using DHCP? I see that Blue Iris is storing a registry entry called "lanip" where the value is the IP address selected in the dropdown box on the Web server settings. I bet if DHCP was slow to obtain an address, Blue Iris could have decided the saved value was obsolete (since it wasn't found attached to any active network adapter) and changed it to a new one.