/usr/lib/xtables-addons/xt_geoip_dl is in xtables-addons-common 1.40-1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 | #!/bin/sh
rm -f GeoIPv6.csv{,.gz} GeoIPCountryCSV.zip GeoIPCountryWhois.csv;
wget \
http://geolite.maxmind.com/download/geoip/database/GeoIPv6.csv.gz \
http://geolite.maxmind.com/download/geoip/database/GeoIPCountryCSV.zip;
gzip -d GeoIPv6.csv.gz;
unzip GeoIPCountryCSV.zip;
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