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Error during running the devel job locally: Unable to connect to

Guys, I am trying to make a local build to verify some of my changes using the following instruction:

However the generated script can’t connect to and I see the following error:

Hit trusty/main amd64 Packages
Hit trusty/restricted amd64 Packages
Hit trusty/universe amd64 Packages
Err trusty InRelease
Err trusty Release.gpg
  Unable to connect to
Reading package lists...
W: Failed to fetch  

W: Failed to fetch  Unable to connect to

W: Some index files failed to download. They have been ignored, or old ones used instead.

Failed to fetch

Reinvoke 'apt update' (10/10) after sleeping 25 seconds

Is the server temporarily unavailable?

Manually changing this generated IP to what ROS jenkins uses helped to proceed with the task, but still not clear yet for me how this IP was generated when I followed the instruction.

The examples were using the default branch of the buildfarm config repo. This branch does no longer work since it references a test farm which is not available anymore. I just updated the examples to point to the production branch instead which is used by the official buildfarm and will continue to be available:

The README in mentions the different branches but the information is bit “hidden” in the text and not easy to discover.

Thank you. Now it works.