Before you read the result
What NordLayer documents about these signals
The points below come from NordLayer's own help centre, which documents these settings as administrator-controlled rather than per-user.
IPv6 is not carried
NordLayer publishes guides for disabling IPv6 on Windows, macOS, Linux and Android, and notes that on iOS it cannot be disabled on the device and has to be handled at the router instead. Its stated reason is that having IPv6 enabled can slow the connection considerably, make it unstable, or make connecting to a server impossible. An IPv6 address still tied to your own connection is the case those guides exist for.
Include and Exclude are opposite defaults
NordLayer documents two split-tunnelling modes. Include mode encrypts and routes only the IP addresses or subnets an administrator chose. Exclude mode routes everything through the tunnel except the addresses listed, and NordLayer documents excluded traffic as having direct internet access without encryption. In Include mode a browser is normally outside the tunnel, so this page showing your own address is the configuration working.
The browser extension covers only the browser
Exclude mode is documented on the gateway, where it accepts IP addresses, subnets and domains, and on the browser extension, where it accepts domains, subdomains and wildcards. Which of the two you are running decides whether a reading here describes the whole machine or only this browser, and that is the first thing to establish before comparing two devices.
A dedicated gateway means a fixed address
NordLayer documents a server with a dedicated IP as useful when team members need a fixed address that only they can use, and as the basis for allowlisting access to remote resources and for setting up a site-to-site connection. If your organisation has one, the exit address is expected to be the same on every run, which makes a changed address the thing worth asking about.
The kill switch can disturb the local network
NordLayer documents a kill switch across Windows, macOS, Android, iOS and Linux that blocks internet traffic immediately when the connection fails, and notes that it may limit local network services such as AirDrop, CarPlay and other device-to-device connections. That side effect is a useful confirmation it actually engaged when a check comes back with nothing at all.