Comment 4 for bug 2028683

We have 5 more occurrences today, I wonder if this is a regression in the Octavia charm revision 158 (released 2 days ago). I am looking at commit [1] in particular as a possible cause, though I would have expected that to be present in other charms as well.

[1] https://github.com/juju/charm-helpers/commit/58097330bd15cfd7b539481c55718c6cee8ca124