[Samba] Samba 4.16 and 4.17 ubuntu focal and jammy packages

[Peter Carlson]

1) what's the difference between 2:4.17.2+dfsg-7 and 2:4.17.2+dfsg-2 ?

2) Doing an in place upgrade fails.

root at nc1:~# apt policy samba
samba:
   Installed: 2:4.15.9+dfsg-0ubuntu0.2
   Candidate: 2:4.15.9+dfsg-0ubuntu0.2
   Version table:
      2:4.17.2+dfsg-7 100
         100 http://www.corpit.ru/mjt/packages/samba 
ubuntu-22.04-jammy/samba-4.17/ Packages
      2:4.17.2+dfsg-2 100
         100 http://www.corpit.ru/mjt/packages/samba 
ubuntu-22.04-jammy/samba-4.17/ Packages
  *** 2:4.15.9+dfsg-0ubuntu0.2 500
         500 http://us.archive.ubuntu.com/ubuntu jammy-updates/main 
amd64 Packages
         500 http://us.archive.ubuntu.com/ubuntu jammy-security/main 
amd64 Packages
         100 /var/lib/dpkg/status
      2:4.15.5~dfsg-0ubuntu5 500
         500 http://us.archive.ubuntu.com/ubuntu jammy/main amd64 Packages

root at nc1:~# apt upgrade
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

root at nc1:~# apt install samba=2:4.17.2+dfsg-2
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
  samba : Depends: samba-common (= 2:4.17.2+dfsg-2) but 
2:4.15.9+dfsg-0ubuntu0.2 is to be installed
          Depends: samba-common-bin (= 2:4.17.2+dfsg-2) but 
2:4.15.9+dfsg-0ubuntu0.2 is to be installed
          Depends: libldb2 (>= 2:2.6.1) but 2:2.4.4-0ubuntu0.1 is to be 
installed
          Depends: libtalloc2 (>= 2.3.4~) but 2.3.3-2build1 is to be 
installed
          Depends: libtdb1 (>= 1.4.7~) but 1.4.5-2build1 is to be installed
          Depends: libtevent0 (>= 0.13.0~) but 0.11.0-1build1 is to be 
installed
          Depends: samba-libs (= 2:4.17.2+dfsg-2) but 
2:4.15.9+dfsg-0ubuntu0.2 is to be installed