ipfire upgrade notes 111 to 121 then to current

ipfire 2.19 111 backup to create ISO is broken.

One needs to patch /usr/local/bin/backupiso to point at a new subdomain.  They changed the subdomain for the downloads from download.ipfire.com to downloads.ipfire.com, and didn't leave the old subdomain for older backups.

the ipf file is created w/o problem, but it's always good to have a testable iso to use before embarking on any big upgrade.

topic on the forum:

Resolving download.ipfire.org fails - 'unknown host'

https://forum.ipfire.org/viewtopic.php?f=27&t=19579&p=111171&hilit=backupiso#p111171



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