snap ack vs --dangerous doesn't make a difference in this case I believe. $ snap download etcd $ snap download core18 $ sudo iptables -A OUTPUT -p tcp --destination-port 80 -j REJECT --reject-with tcp-reset $ sudo iptables -A OUTPUT -p tcp --destination-port 443 -j REJECT --reject-with tcp-reset $ sudo snap ack core18_1885.assert $ sudo snap ack etcd_230.assert
$ sudo snap install ./core18_1885.snap $ sudo snap install ./etcd_230.snap error: cannot perform the following tasks: - Ensure prerequisites for "etcd" are available (cannot install system snap "snapd": Post https://api.snapcraft.io/v2/snaps/refresh: dial tcp 91.189.92.20:443: connect: connection refused) ** Changed in: snapd Status: Incomplete => New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1891259 Title: snap installation with core18 fails at 'Ensure prerequisites for "etcd" are available' in air-gapped environments To manage notifications about this bug go to: https://bugs.launchpad.net/charm-etcd/+bug/1891259/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs