Actually, I want the ability to plot the "best"`ping_host` (that is, lowest latency host), since that's going to display the biggest variance. A few milliseconds of additional bloat added to the 90msec from my house to Fremont is easy to ignore. Tacking a few milliseconds onto 16msec from Cloudflare's DNS shows a significant delta - and worth reporting.

For example, here are ping times for various hosts from my house and (in paren's from netperf.bufferbloat.net in Atlanta):

* flent-fremont.bufferbloat.net ~90msec (~53msec)
* netperf.bufferbloat.net ~40msec (~30 microseconds - Duh :-)
* gstatic.com and 8.8.8.8 (Google's all-purpose host and DNS) is ~21-22msec (~15msec)
* Cloudflare's 1.1.1.1 (anycast address, I suspect) is ~16msec (< 300 microseconds)

So my preference would be to have a way to tell Flent to use ping times from another host besides the -H host. 

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