Comment 1 for bug 423607

It's been a while that ubuntu-minimal depends on isc-dhcp-client:

$ apt-cache show ubuntu-minimal | grep Depends | grep dhcp
Depends: adduser, apt, apt-utils, console-setup, debconf, debconf-i18n, e2fsprogs, eject, init, iproute2, iputils-ping, isc-dhcp-client, kbd, kmod, less, locales, lsb-release, mawk, mount, netbase, netcat-openbsd, netplan.io, passwd, procps, python3, sensible-utils, sudo, tzdata, ubuntu-advantage-tools, ubuntu-keyring, udev, vim-tiny, whiptail

I checked on Focal with ubuntu-minimal version 1.450.2 but the fix possibly came earlier than that.