Verified. The first dirmngr started by 1.6.1 stayed alive even after 1.6.2 finished executing; the dirmngr started by 1.6.2 was not alive anymore. + lxc launch -e ubuntu:bionic lp1773992-bionic Creating lp1773992-bionic Starting lp1773992-bionic + sleep 5 + lxc exec lp1773992-bionic -- sh -c 'apt-cache policy apt | grep Inst ; apt-key adv --recv-keys 843938DF228D22F7B3742BC0D94AA3F0EFE21092 < /dev/null ; sleep 2; ps aux' Installed: 1.6.1 Executing: /tmp/apt-key-gpghome.UEzrZXm31Q/gpg.1.sh --recv-keys 843938DF228D22F7B3742BC0D94AA3F0EFE21092 [...] root 326 0.0 0.0 173060 13952 ? Ss 09:39 0:00 dirmngr --daemon --homedir /tmp/apt-key-gpghome.UEzrZXm31Q root 411 0.0 0.0 37792 3428 ? R+ 09:40 0:00 ps aux + lxc exec lp1773992-bionic -- sh -c 'echo deb http://archive.ubuntu.com/ubuntu bionic-proposed main >> /etc/apt/sources.list && apt-get update && apt-get -y install apt/bionic-proposed' dpkg-preconfigure: unable to re-open stdin: No such file or directory + lxc exec lp1773992-bionic -- sh -c 'apt-cache policy apt | grep Inst ; apt-key adv --recv-keys 843938DF228D22F7B3742BC0D94AA3F0EFE21092 < /dev/null ; sleep 2; ps aux' Installed: 1.6.2 Executing: /tmp/apt-key-gpghome.EAd3H1TKh1/gpg.1.sh --recv-keys 843938DF228D22F7B3742BC0D94AA3F0EFE21092 gpg: key D94AA3F0EFE21092: 45 signatures not checked due to missing keys gpg: key D94AA3F0EFE21092: "Ubuntu CD Image Automatic Signing Key (2012)