I am specifically referring to the "Domain name" prompt that appears during system setup. I understand that the value entered on this prompt is inserted into
/etc/resolv.conf as the following.
search mydomain.local domain mydomain.local
This answer leads me to believe that two debian systems (let's say
deb2) on the same unmanaged network (let's say connected to a network switch or hub) would be able to search for each others hostnames and be able to ping each other. Although when I install two debian virtual machines, with identical settings, although different hostnames, no communication is possible from
deb2 whether through pinging
deb1.mydomain.local (or vice-versa). I also have no communication through IPv6 link-local, which I am under the impression should be completely auto-configured.
Is there something wrong with the setup I have, or is this type of communication not possible through an unmanaged setup?