Where is tracer

[Robert Moskowitz]

So I decided to look into tracer.

When I did my system build I did a 'dnf list > dnf.lst' to get a listing 
of all rpms in the repos (at least at that point it time). I have found 
this an easy way to go look for things of interest.  So I did:

# grep tracer dnf.lst
traceroute.x86_64 3:2.1.0-6.fc28                  @fedora
accumulo-tracer.noarch 1.8.1-9.fc28                    fedora
dnstracer.x86_64 1.9-19.fc28                     fedora
golang-github-rubyist-tracerx-devel.noarch
paris-traceroute.x86_64 0.92-13.fc28                    fedora
python2-dnf-plugin-tracer.noarch 2.0.5-3.fc28                    fedora
python2-tracer.noarch 0.7.0-1.fc28                    updates
python3-dnf-plugin-tracer.noarch 2.0.5-3.fc28                    fedora
python3-tracer.noarch 0.7.0-1.fc28                    updates
tracer-common.noarch 0.7.0-1.fc28                    updates

There is a python2 and 3 tracer.  Which one to use on F28?  What is the 
difference between the command line tracer and the dnf plugin?

thanks