Comment 26 for bug 1991812

Continuing formal focal verification

b) Regression test
b1) Upgrade

Starting from a working frr installed from focal-updates:
ubuntu@f-frr-packaging-regression:~$ sudo systemctl restart frr

ubuntu@f-frr-packaging-regression:~$ ls -lah /var/log/frr/frr.log
-rw-r----- 1 syslog adm 1.4K Dec 7 20:42 /var/log/frr/frr.log

ubuntu@f-frr-packaging-regression:~$ apt-cache policy frr
frr:
  Installed: 7.2.1-1ubuntu0.1
  Candidate: 7.2.1-1ubuntu0.1
  Version table:
 *** 7.2.1-1ubuntu0.1 500
        500 http://br.archive.ubuntu.com/ubuntu focal-updates/universe amd64 Packages
        100 /var/lib/dpkg/status
     7.2.1-1 500
        500 http://br.archive.ubuntu.com/ubuntu focal/universe amd64 Packages

Upgrading to the package in focal-proposed, and logging keeps working:
ubuntu@f-frr-packaging-regression:~$ apt-cache policy frr
frr:
  Installed: 7.2.1-1ubuntu0.2
  Candidate: 7.2.1-1ubuntu0.2
  Version table:
 *** 7.2.1-1ubuntu0.2 500
        500 http://br.archive.ubuntu.com/ubuntu focal-proposed/universe amd64 Packages
        100 /var/lib/dpkg/status
     7.2.1-1ubuntu0.1 500
        500 http://br.archive.ubuntu.com/ubuntu focal-updates/universe amd64 Packages
     7.2.1-1 500
        500 http://br.archive.ubuntu.com/ubuntu focal/universe amd64 Packages

Log file increased:
ubuntu@f-frr-packaging-regression:~$ sudo systemctl restart frr

ubuntu@f-frr-packaging-regression:~$ ls -lah /var/log/frr/frr.log
-rw-r----- 1 syslog adm 2.8K Dec 7 20:43 /var/log/frr/frr.log