diff --git a/coin/provisioning/qtci-linux-Ubuntu-20.04-x86_64/81-fix_mdns_docker_resolution.sh b/coin/provisioning/qtci-linux-Ubuntu-20.04-x86_64/81-fix_mdns_docker_resolution.sh
new file mode 100755
index 00000000..0085d8ad
--- /dev/null
+++ b/coin/provisioning/qtci-linux-Ubuntu-20.04-x86_64/81-fix_mdns_docker_resolution.sh
@@ -0,0 +1,13 @@
+#!/bin/bash
+
+# The new version of libnss-mdns resolver library automatically rejects all
+# hostnames with more than two labels (i.e. subdomains deep), for example
+# vsftpd.test-net.qt.local is automatically rejected. The changes here fix
+# this, see also https://github.com/lathiat/nss-mdns#etcmdnsallow
+
+cat <<EOT | sudo tee /etc/mdns.allow
+.local.
+.local
+EOT
+
+sudo sed -i '/^hosts:/s/mdns4_minimal/mdns4/' /etc/nsswitch.conf