I don’t know what happened… I lost DNS resolution on my Ubuntu Docker 16.04 DO droplet.
root@gpc-docker-sfo2:resolvconf$ telnet gitlab.com 443
telnet: could not resolve gitlab.com/443: Temporary failure in name resolution
root@gpc-docker-sfo2:resolvconf$ cat /etc/resolv.conf
I don’t know what happened? How do I get this back working?
(Ubuntu Docker 1.12.5 on 16.04)
As a note: I’ve always kept my apps updated via apt-get. Was there something related to the recent Docker 13.0 update?
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I fixed it!
Well. I don’t know what happened: looks like something went amiss when I added IPv6 to this image (post-create) through the console.
I creating a new image (IPv6 on create) in attempts to replicate. I found two differences in the new image:
- It had IPv6 settings within
interfaces.d/50-cloud-init.cfg - It didn’t have
ubuntu-fanfiles within theif-[up/down].d/directories
So, I added IPv6 settings and removed the ubuntu-fan files.
Rebooted the box, and we’re back working!
Any idea what the ubuntu-fan files are for? Are they necessary?
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