@cnx it tries to fetch ci.guix.gnu.org and hosting provider, where CI is located blocks requests from Russia for example.
@abcdw, it seems it was not the case for me, yesterday I had to retry real hard to pass the check despite pinging (and later downloading) still works fine 
@cnx Recently a few people and I got 502 for various guix resources, it can be related.
@cnx Is https://issues.guix.gnu.org works for you?
@abcdw, I think it’s not related as mumi has only been down recently. Regardless I don’t think it’s a software bug so 
@abcdw If network check fails, I’d instead suggest emailing bug-guix@gnu.org all the details, including /var/log/messages. :-)
@civodul For people from Russia/Belarus the problem is well-known and already reported a few times :)
In general case, you are right, in addition to using a workaround it would be cool to report a bug.
@abcdw Is there a bug report I overlooked?
@civodul I remember the thread in help-guix https://lists.gnu.org/archive/html/help-guix/2022-03/msg00004.html
But there were a few more threads somewhere around. Maybe @w96k can help.
@abcdw, any background on why it happens?