apt-get update не может подключиться к зеркалу

когда я пытаюсь sudo apt-get update это вывод:

Hit:1 http://ppa.launchpad.net/linuxuprising/java/ubuntu focal InRelease
Get:2 http://www.geogebra.net/linux stable InRelease [8.690 B]                 
Err:3 http://mirror.ipb.de/ubuntu focal InRelease                              
  Could not connect to mirror.ipb.de:80 (2a02:f28:2:0:194:29:226:88), connection timed out Could not connect to mirror.ipb.de:80 (194.29.226.88), connection timed out
Err:4 http://mirror.ipb.de/ubuntu focal-updates InRelease
  Unable to connect to mirror.ipb.de:http:
Err:5 http://mirror.ipb.de/ubuntu focal-backports InRelease
  Unable to connect to mirror.ipb.de:http:
Err:6 http://mirror.ipb.de/ubuntu focal-security InRelease
  Unable to connect to mirror.ipb.de:http:
Fetched 8.690 B in 31s (284 B/s)
Reading package lists... Done
W: Failed to fetch http://mirror.ipb.de/ubuntu/dists/focal/InRelease  Could not connect to mirror.ipb.de:80 (2a02:f28:2:0:194:29:226:88), connection timed out Could not connect to mirror.ipb.de:80 (194.29.226.88), connection timed out
W: Failed to fetch http://mirror.ipb.de/ubuntu/dists/focal-updates/InRelease  Unable to connect to mirror.ipb.de:http:
W: Failed to fetch http://mirror.ipb.de/ubuntu/dists/focal-backports/InRelease  Unable to connect to mirror.ipb.de:http:
W: Failed to fetch http://mirror.ipb.de/ubuntu/dists/focal-security/InRelease  Unable to connect to mirror.ipb.de:http:
W: Some index files failed to download. They have been ignored, or old ones used instead.

Как я могу это исправить?