LAN connection - not DHCP

if we want to avoid DHCP and want to do a fixed IP-adress we have to put in the "network prefix lenght"

this is as i found e.g. for IP 255.255.255.0 = 24

but this is not known by all of the people

so it should be as in X6Pro and all other devices i saw until now possible to put in 255.255.255.0 or something like that

and as i read some systems have problems with devices which use "network prefix lenght" so they have to use IP-Adresses like 255.255.255.0

thx for fix!