oh, got it. How to change it?you have an issue with your network config (looks like your system tries to connect to the the APT repo host via IPv6, but does not have IPv6 connectivity?)
Thank you so much. I added few command to /etc/sysctl.confdepends on your environment.. first, verify that it's indeed IPv6 that's broken but IPv4 is working (e.g., by pinging/wgetting some public hosts reachable via one or the other only). figure out whether IPv6 is supposed to be working, and either fix it or disable IPv6.
net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
net.ipv6.conf.lo.disable_ipv6 = 1
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