[outages] Sprint 4G LTE DNS intermittencies late at night

[Jay Ashworth]

I have been noticing a *lot*, lately -- one day in three-ish -- that my
Sprint 4G phone will, for a lengthy but apparently random period between 0100
and 0300EST, lose the ability to resolve DNS names using the resolvers that
I am provided by Sprint.

I think I reported a version of this before, but hadn't nailed down quite
what was going on then.

I have since found the SetDNS app, and proved that during these outages --
during which FB and Twitter, frex, still worked, because they had internally
cached the relevant server IPs, but web browsing would not and neither would 
manual DNS lookup with testing tools -- if I used SetDNS to switch to, say,
openDNS, then everything immediately started working.

If I then disabled SetDNS and rebooted (cause there seems no way to get SetDNS
to reset the addresses it found), it immediately broke again.

So, is this poorly managed scheduled maintenance on *both* the resolvers
that Sprint hands me?

Or something else?

Anyone else with Sprint LTE (non-Spark) in the Tampa or other markets who
can confirm or deny?

Cheers,
-- jra

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