[Python-Dev] test_urllib2net fixed to repair Travis CI

Nathaniel Smith njs at pobox.com
Wed Dec 5 10:18:00 EST 2018

Travis is in the middle of moving everything from AWS to GCE, which is
probably related:


As noted there, GCE has different IP addresses. But I suspect it's not the
new IP address that's the problem, but rather the fact that the GCE setup
is known to break outgoing ftp:



On Wed, Dec 5, 2018, 02:53 Victor Stinner <vstinner at redhat.com wrote:

> Hi,
> It seems like Travis CI changed its security or network configuration:
> some FTP tests of test_urllib2net started to fail with "425 Security:
> Bad IP connecting" yesterday:
>    https://bugs.python.org/issue35411
> The failure seems to be reproducible and so prevents to merge any
> change in any branch. It blocked our whole workflow :-(
> Good news: I quickly fixed the CI! (2.7, 3.6, 3.7 and master branches)
> I skipped the test on Travis CI: AppVeyor runs these tests in
> pre-commit and the buildbot farm run them in post-commit.
> Bad news: You may have to update your pull requests (ex: merge master
> into your branch) to retrieve this fix if the test_urllib2net failed
> on Travis CI with "425 Security: Bad IP connecting" on your PR.
> Victor
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