I had old UPS with serial port which was connected using Profilic USB to serial adapter. Sometimes this USB dongle had frozen and need to be restated – re-attached. This can be done in linux using IOCTL.
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My original article about this topic is more that year old and was using Regional Internet Registries (RIRs) list as source and was in python. This post will describe other simple solution how to generate some country IP ranges list.
There are many sites providing country blocklists, for example http://www.ip2location.com/free/visitor-blocker or https://www.countryipblocks.net/. When you want periodicaly update such list, you have problem. You need pay for that service for automated access, actual data or “hack” access to that service (abuse their free access conditions)…