@petr-sedlacek I thought the problem was: the oracle provided version of virtualbox depends on libcurl3, and the canonical provided version is 5.0 doesn't have 64-bit support (or at least, it doesn't work yet).
Whelll....
Turns out I was downloading the wrong version from Oracle. There is a "xenial" version of 5.2_5.2.22-126460, and a "bionic" version. That's right, two different versions of the same version. EXCELLENT! Install the copy of virtualbox for bionic and all is right with the world.
AH HA!
@petr-sedlacek I thought the problem was: the oracle provided version of virtualbox depends on libcurl3, and the canonical provided version is 5.0 doesn't have 64-bit support (or at least, it doesn't work yet).
Whelll....
Turns out I was downloading the wrong version from Oracle. There is a "xenial" version of 5.2_5.2.22-126460, and a "bionic" version. That's right, two different versions of the same version. EXCELLENT! Install the copy of virtualbox for bionic and all is right with the world.
I apologize for my annoyance :)