Comment 6 for bug 45722

If flashplugin-nonfree depends on wget, then it seems appropriate to assume that wget is properly configured. See http_proxy and ftp_proxy in /etc/wgetrc. Maybe you want to add debconf panels to wget to configure proxy for wget.

(I don't know either how to push bugs from launchpad to Debian, but maybe that's not necessary if the Debian maintainer is already reading here. :) )