Comment 2 for bug 1824776

root@d-upgr:~# apt remove multipath-tools -s
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
  ibverbs-providers kpartx libaio1 libfreetype6 libibverbs1 libnl-3-200 libnl-route-3-200 libnspr4 libnss3 librados2 libsgutils2-2 liburcu6 sg3-utils sg3-utils-udev
Use 'apt autoremove' to remove them.
The following packages will be REMOVED:
  multipath-tools ubuntu-server
0 upgraded, 0 newly installed, 2 to remove and 0 not upgraded.

Ok, it is seeded in ubuntu-server which I think is no news [1], it might formerly have been stripped ?

Checking the meta packages:
Disco:
$ apt-cache show ubuntu-server | grep '^Depends'
...
Yes multipath-tools is a new dependency in Disco, but not in older versions.
Interesting, checking ubuntu-meta and co

[1]: https://git.launchpad.net/~ubuntu-core-dev/ubuntu-seeds/+git/ubuntu/commit/?id=8191ce8450b1312513df1cdcaf21039ef4606ee3