Hi,
there exist some well documented ranges of IPs that are reserved just for this purpose: use in documentazion examples!
https://www.iana.org/assignments/iana-ipv4-special-registry/iana-ipv4-special-registry.xhtml
Are named TEST-NET-1, TEST-NET-2 and TEST-NET-3 and has the advantage of not confusing people with the use of eg. 172.16.16.1 as “internet WAN IP”.
Best regards
N
Agree, at least when there suppose to be public IP address. Using a private range does make things confusing if it’s not a “LAN” in example.
But “non-RFC compliance problem” is also in the videos. One I watch recently, show the DNS server as an example of public IP.
Well, in what should be the most basic document by Mikrotiik, the “Simple Static Routing” here:
https://wiki.mikrotik.com/wiki/Manual:Simple_Static_Routing
the IP given by the ISP is 10.1.1.2/30 and gateway is 10.1.1.1, besides, there are two PC’s on LAN2 with same address, 192.168.2.3 (I guess for this latter it was just a test to see if the reader was paying attention 
)