The problem is that you went to 'DNS Configuration' when you should have
gone to something about Network Card or something; from the command line
it would simply be:

sudo /sbin/yast lan
The reason is that the network card settings define all aspects of the
local machine's client networking, including IP, hostname, nameservers,
routing, etc. When you went into the DND stuff from the main portion of
Yast, you were going into the portion that defines and configures a DNS
service, which is why 'it told you to first install 'bind', which is the
default DNS service on Linux; in other words, you were telling Yast to
configure the server side when you needed to configure the client side.

Good luck.

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