Dear all, On Fri, Sep 30, 2022 at 06:49:48PM +0200, Carsten Otto wrote: > I escalated this to the university staff managing DNS for > rwth-aachen.de.
Bernd Kohler of RWTH Aachen university investigated and found something
interesting.
The CNAME ftp2.de.debian.org -> ftp.halifax.rwth-aachen.de resolves for
public DNS servers like 8.8.8.8, but it does not resolve for those used
by Debian.
date -R; for i in "82.195.75.105" "2001:41b8:202:deb:1a1a:0:52c3:4b69"
"209.87.16.31" "2607:f8f0:614:1::1274:31" "194.177.211.201"
"2001:648:2ffc:deb::211:201"; do for j in "a" "aaaa"; do dig +noall +answer
@${i} ftp2.de.debian.org ${j}; done; echo -e "\n#######################\n"; done
Maybe this is related to the issues you are seeing?
Best regards,
Carsten
--
Dr. Carsten Otto
http://verify.rwth-aachen.de/otto/
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