[Bug 1314760] Re: first hrSWInstalledIndex is 0, should be 1

The upstream has a bugfix (yet to be released), which I am attaching here. Please consider locally applying it for the time being. ** Patch added: "The upstream fix for the bug"

[Bug 1724420] [NEW] ipDefaultRouterLifetime returns out-of-range values

Public bug reported: IP-MIB defines ipDefaultRouterLifetime to be in 0..65535 range, but the current code 1) erroneously uses 0xUL (4294967296) as the max value, and 2) does not clip the computed value that exceeds the maximum (this was unnecessary probably because the max value was also