root@focal:~# pip3 install ipmininet
Collecting ipmininet
  Downloading ipmininet-0.9.tar.gz (110 kB)
     |████████████████████████████████| 110 kB 2.8 MB/s 
ERROR: Packages installed from PyPI cannot depend on packages which are not also hosted on PyPI.
ipmininet depends on mininet@ git+https://github.com/mininet/mininet@2.3.0d6 
root@focal:~# 

git clone git://github.com/mininet/mininet.git
cd mininet
git tag
git checkout 2.3.0d6
./util/install.sh -a

ubuntu@ubuntu:/data1$ cd mininet/
ubuntu@ubuntu:/data1/mininet$ git tag
1.0.0
2.0.0
2.1.0
2.1.0p1
2.1.0p2
2.2.0
2.2.1
2.2.2
2.3.0d3
2.3.0d4
2.3.0d5
2.3.0d6
cs244-spring-2012-final
ubuntu@ubuntu:/data1/mininet$ git checkout 2.3.0d6
fatal: Unable to create '/data1/mininet/.git/index.lock': Permission denied
ubuntu@ubuntu:/data1/mininet$ sudo su
[sudo] password for ubuntu: 
root@ubuntu:/data1/mininet# git checkout 2.3.0d6
error: Your local changes to the following files would be overwritten by checkout:
        util/install.sh
Please commit your changes or stash them before you switch branches.
Aborting
root@ubuntu:/data1/mininet#