Ubuntu: apt upgrades failing with “Cannot initiate the connection to ports.ubuntu.com”

While doing a distro upgrade with I kept getting failures half-way stating The errors showed several IPv6 addresses that couldn’t be reached. My router supports IPv6, but not my ISP. Somehow I was expecting that the router would be doing the translation or DNS resolution between the two but this…

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Ubuntu/Debian: Not enough free space on disk ‘/boot’ when updating the OS

My /boot partition is only 512MB and I get this error message every now and then when updating: Not enough free space The upgrade needs a total of xx.x M free space on disk ‘/boot’. Please free at least an additional xx.x M of disk space on ‘/boot’. You can…

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