Comment 32 for bug 1872118

Running over a day with the packages from the PPA in place:
● isc-dhcp-server.service - ISC DHCP IPv4 server
     Loaded: loaded (/lib/systemd/system/isc-dhcp-server.service; enabled; vendor preset: enabled)
     Active: active (running) since Tue 2020-08-04 16:23:19 UTC; 1 day 1h ago
       Docs: man:dhcpd(8)
   Main PID: 592 (dhcpd)
      Tasks: 4 (limit: 4620)
     Memory: 6.4M
     CGroup: /system.slice/isc-dhcp-server.service
             └─592 dhcpd -user dhcpd -group dhcpd -f -4 -pf /run/dhcp-server/dhcpd.pid -cf /etc/dhcp/dhcpd.conf

root@unique-macaw:/home/ubuntu# dpkg -l | grep ppa1
ii isc-dhcp-client 4.4.1-2.1ubuntu6~ppa1 amd64 DHCP client for automatically obtaining an IP address
ii isc-dhcp-common 4.4.1-2.1ubuntu6~ppa1 amd64 common manpages relevant to all of the isc-dhcp packages
ii isc-dhcp-server 4.4.1-2.1ubuntu6~ppa1 amd64 ISC DHCP server for automatic IP address assignment
ii libdns-export1109 1:9.11.16+dfsg-3~ppa1 amd64 Exported DNS Shared Library
ii libirs-export161 1:9.11.16+dfsg-3~ppa1 amd64 Exported IRS Shared Library
ii libisc-export1105:amd64 1:9.11.16+dfsg-3~ppa1 amd64 Exported ISC Shared Library
ii libisccfg-export163 1:9.11.16+dfsg-3~ppa1 amd64 Exported ISC CFG Shared Library