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Yeah. Success is proving elusive. Docker and DNS issues with any attempt to upgrade. I am going to try setting up a test instance so that I don’t have to ‘explore’ this on the live server. I am getting tired of taking it down :slight_smile:

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I did a quick search myself and saw that updates to Ubuntu 18 had other issues with DNS issues.
One was a service restart to fix on the resolved daemon and one was they had to re-add port 53 to allowed via ipTables.

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In this case it appears to be a docker configuration issue. I think. :-). I was having it with both 16.04 and 18.04. I was able to ping other servers but Docker could not resolve it’s addresses during an attempt at a container update. Oh, I might sound like I know what I am talking about, but I am just learning it :slight_smile:

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