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With #Debian I get this:
E: The repository 'http://security.debian.org bullseye/updates Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.

when I run #apt-get update && apt-get upgrade&& apt-get install package, as bit before there is
Ign:1 http://security.debian.org bullseye/updates InRelease
Err:2 http://security.debian.org bullseye/updates Release                      
  404  Not Found [IP: 2a04:4e42:3::644 80]


Anyone can point me in a direction to solve this?
#Debian #apt-get
utzer [Friendica]
utzer [Friendica]  
•
I wonder where it gets the 2a04:4e42:3::644 from when dig shows this:
dig AAAA security.debian.org

; <<>> DiG 9.16.22-Debian <<>> AAAA security.debian.org
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 32375
;; flags: qr rd ra ad; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 512
;; QUESTION SECTION:
;security.debian.org.		IN	AAAA

;; ANSWER SECTION:
security.debian.org.	240	IN	AAAA	2a04:4e42::644
security.debian.org.	240	IN	AAAA	2a04:4e42:400::644
security.debian.org.	240	IN	AAAA	2a04:4e42:600::644
security.debian.org.	240	IN	AAAA	2a04:4e42:200::644

;; Query time: 8 msec
;; SERVER: 192.168.188.1#53(192.168.188.1)
;; WHEN: Tue Jan 25 10:13:39 CET 2022
;; MSG SIZE  rcvd: 160
utzer [Friendica]
utzer [Friendica]  
•
now 
  404  Not Found [IP: 2a04:4e42:62::644 80]


does apt resolve DNS itself or why is the IP not shown by dig?
utzer [Friendica]
utzer [Friendica]  
•
when I replaced
#deb [arch=amd64] http://security.debian.org/ bullseye/updates main contrib non-free
#deb-src [arch=amd64] http://security.debian.org/ bullseye/updates main contrib non-free

with
deb http://security.debian.org/debian-security bullseye-security main contrib non-free

in 
/etc/apt/sources.list

it works.
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