Fallback SNMP versions and counter sizes about manubulon-snmp

[SteScho]

You should know if it is an old platform and if you have 64 bit counters. Why then let it be recognized automatically when you can just set it directly?

[GillesMocellin]

Hi ! Because I use a monitoring system (Icinga) with template for many different equipments, using the same command (these scripts). No, I don't want to sort my 1200 existing routers by SNMP version and 64 bits support. I do trial and error, but have to override some host by host settings.
Even more, I don't know why, some Windows hosts doesn't provide 64bits counters...

[SteScho]

I hope you don't have a 10 GBit interface that lacks the 64 bits ;-) Ok, maybe a switch for automatic snmp detection may be a solution. Can you create a PR?