Keys cannot be refreshed via "gpg2 --refresh-keys"

gpg2 --refresh-keys yields the following:

gpg: keyserver refresh failed: No keyserver available

However, I have everything set up in dirmngr.conf:

keyserver hkp://jirk5u4osbsr34t5.onion
keyserver hkps://hkps.pool.sks-keyservers.net
hkp-cacert /home/colan/.gnupg/sks-keyservers.netCA.pem

...and dirmngr can find it:

colan@snake[Tue 13 14:30]% dirmngr
dirmngr[26401.0]: permanently loaded certificates: 0
dirmngr[26401.0]: runtime cached certificates: 0
# Home: ~/.gnupg
# Config: /home/colan/.gnupg/dirmngr.conf
OK Dirmngr 2.1.11 at your service
keyserver
S KEYSERVER hkps://hkps.pool.sks-keyservers.net
OK

Looks like gpg2 isn't grabbing the correct information from the response as here's what's happening with debugging turned on:

colan@snake[Tue 13 14:30]% gpg2 --refresh-keys --debug-all
[...]
gpg: DBG: connection to the dirmngr established
gpg: DBG: chan_6 -> GETINFO version
gpg: DBG: chan_6 <- D 2.1.11
gpg: DBG: chan_6 <- OK
gpg: DBG: chan_6 -> KEYSERVER
gpg: DBG: chan_6 <- OK
gpg: keyserver refresh failed: No keyserver available
gpg: DBG: chan_6 -> BYE

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: gnupg2 2.1.11-6ubuntu2
ProcVersionSignature: Ubuntu 4.4.0-36.55-generic 4.4.16
Uname: Linux 4.4.0-36-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CurrentDesktop: Unity
Date: Tue Sep 13 14:31:34 2016
EcryptfsInUse: Yes
SourcePackage: gnupg2
UpgradeStatus: No upgrade log present (probably fresh install)