* Change Ttl to TTL
Following go convention, acronyms should have a consistent case.
See
[Initialisms](https://github.com/golang/go/wiki/CodeReviewComments#initialisms)
This commit changes some public-facing methods, so any code importing
this package and using these methods will need to be updated.
* rewrite Ttl -> TTL
Co-authored-by: reesporte <reesedporter@gmail.com>
MacOS's firewall complains about a previously unknown app trying to
listen for network connections whenever we run go test. That's because
we *are* listening for network connections on arbitrary interfaces, not
just on localhost as we probably intended. Fix that.
