Hi, I could successfully validate that the fix works. I initially installed the current official jammy package, it was hanging again, then I installed your ppa repo and upgraded the packages, and it worked. See the following relevant part of my testing (ran in Docker): Setting up liblmdb0:amd64 (0.9.24-1build1) ... Setting up libmaxminddb0:amd64 (1.5.2-1build1) ... Setting up libnghttp2-14:amd64 (1.43.0-1build2) ... Setting up libuv1:amd64 (1.43.0-1) ... Setting up libmd0:amd64 (1.0.4-1) ... Setting up libbsd0:amd64 (0.11.5-1) ... Setting up libjson-c5:amd64 (0.15-2build3) ... Setting up libicu70:amd64 (70.1-2) ... Setting up libedit2:amd64 (3.1-20210910-1) ... Setting up libxml2:amd64 (2.9.13+dfsg-1) ... Setting up bind9-libs:amd64 (1:9.18.0-2ubuntu2) ... Setting up bind9-host (1:9.18.0-2ubuntu2) ... Setting up bind9-dnsutils (1:9.18.0-2ubuntu2) ... Setting up dnsutils (1:9.18.0-2ubuntu2) ... Processing triggers for libc-bin (2.35-0ubuntu3) ... root@9245c5040595:/# host some-host (hangs forever, I interrupted the command) root@9245c5040595:/# add-apt-repository ppa:sergiodj/bind9-lp1964686 Repository: 'deb https://ppa.launchpadcontent.net/sergiodj/bind9-lp1964686/ubuntu/ jammy main' More info: https://launchpad.net/~sergiodj/+archive/ubuntu/bind9-lp1964686 Adding repository. Press [ENTER] to continue or Ctrl-c to cancel. Adding deb entry to /etc/apt/sources.list.d/sergiodj-ubuntu-bind9-lp1964686-jammy.list Adding disabled deb-src entry to /etc/apt/sources.list.d/sergiodj-ubuntu-bind9-lp1964686-jammy.list Adding key to /etc/apt/trusted.gpg.d/sergiodj-ubuntu-bind9-lp1964686.gpg with fingerprint 1D66A93D45649FD3B4319D337CD01F95D2AA1673 Hit:1 http://archive.ubuntu.com/ubuntu jammy InRelease Hit:2 http://security.ubuntu.com/ubuntu jammy-security InRelease Hit:3 http://archive.ubuntu.com/ubuntu jammy-updates InRelease Hit:4 http://archive.ubuntu.com/ubuntu jammy-backports InRelease Get:5 https://ppa.launchpadcontent.net/sergiodj/bind9-lp1964686/ubuntu jammy InRelease [18.1 kB] Get:6 https://ppa.launchpadcontent.net/sergiodj/bind9-lp1964686/ubuntu jammy/main amd64 Packages [2214 B] Fetched 20.3 kB in 1s (14.8 kB/s) Reading package lists... Done root@9245c5040595:/# apt-get upgrade Reading package lists... Done Building dependency tree... Done Reading state information... Done Calculating upgrade... Done The following packages will be upgraded: bind9-dnsutils bind9-host bind9-libs dnsutils libudev1 login passwd 7 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. Need to get 2595 kB of archives. After this operation, 0 B of additional disk space will be used. Do you want to continue? [Y/n] y Get:1 http://archive.ubuntu.com/ubuntu jammy/main amd64 login amd64 1:4.8.1-2ubuntu2 [187 kB] Get:2 https://ppa.launchpadcontent.net/sergiodj/bind9-lp1964686/ubuntu jammy/main amd64 bind9-host amd64 1:9.18.0-2ubuntu4 [83.7 kB] Get:3 http://archive.ubuntu.com/ubuntu jammy/main amd64 libudev1 amd64 249.11-0ubuntu1 [77.1 kB] Get:4 http://archive.ubuntu.com/ubuntu jammy/main amd64 passwd amd64 1:4.8.1-2ubuntu2 [767 kB] Get:5 https://ppa.launchpadcontent.net/sergiodj/bind9-lp1964686/ubuntu jammy/main amd64 bind9-dnsutils amd64 1:9.18.0-2ubuntu4 [189 kB] Get:6 https://ppa.launchpadcontent.net/sergiodj/bind9-lp1964686/ubuntu jammy/main amd64 bind9-libs amd64 1:9.18.0-2ubuntu4 [1248 kB] Get:7 https://ppa.launchpadcontent.net/sergiodj/bind9-lp1964686/ubuntu jammy/main amd64 dnsutils all 1:9.18.0-2ubuntu4 [43.7 kB] Fetched 2595 kB in 1s (3081 kB/s) ... root@9245c5040595:/# host some-host Host some-host not found: 2(SERVFAIL) root@9245c5040595:/# About reproducing the original issue, I don't really know how to do it. I tried starting the container with "--dns 8.8.8.8" and this was enough to fix the issue with the current official jammy package. I also tried with two DNS (8.8.8.8 and 8.8.4.4). I don't know what is so special about our corporate DNS. Since I could validate the fix on my side, will this land in an official jammy package update before the official release of jammy in april ? Cheers, Romain