The upgrade V8.102 scripts /var/upgrade/functions.sh and /var/upgrade/up_fetch won't respect the settings of a parent proxy or an acc-cache.
Cause of this the wget-command won't fetch the upgrade-files if there is no direct internet connection.
I simply changed a little bit in those two scripts and got it working for my parent-proxy settings. But I won't recommend that to all public users.
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