On Thu, 2019-03-14 at 15:42 +0000, KM via CentOS wrote:
I should have mentioned that I tried nmtui but found no settings for a netmask anywhere. like I said …. dummy.
It's part of the IP address - so you put something like
192.168.0.1/24
for a 255.255.255.0 subnet. It's called a CIDR address.
P.