I'm having rather odd issues that I've tracked down to BT being the culprit. I'm running Ubuntu 16.04, with a wired connection to a Home Hub 5. I can run apt-get update etc. perfectly ok, but this fails if I do so when trying to build a docker image. When I switch over to a wireless hotspots on my phone, it succeeds. The error from docker looks like:
Err:4 http://archive.ubuntu.com/ubuntu xenial-security InRelease
Clearsigned file isn't valid, got 'NOSPLIT' (does the network require authentication?)
Any ideas? If my router is interfering with DNS lookup or whatever, is my only option to change to another ISP? I need to be able to build docker images for my work.
Solved! Go to Solution.
Changing ISP is a bit drastic, changing your router would be simpler. Try setting your DNS to 126.96.36.199 and 188.8.131.52 manually on your Ubuntu machine rather than using the BT DNS servers via the hub. You can't change DNS on the HUB.
Thanks for the reply! I shall give that a try - not an expert on networking matters, this is very frustrating stuff..
Thank you so much for your help, you're a lifesaver 🙂