Made Munin plugin to graph signal levels from a Cisco EPC3010 cable mode...

A simple plugin that parses the Cisco EPC3010 cable modem statuspage found at 192.168.100.1. This modem is used by the Norwegian cable-TV company GET, but is probably used many other places as well.
Please use "mktemp" to create a temporary file, and "trap" to ensure it is removed afterwards.

Example: https://github.com/munin-monitoring/munin/blob/f043c8bd908becdf2554b3efdc0b5d4388f28036/plugins/node.d/http_loadtime.in#L97