package libc6-i386 2.23-0ubuntu9 failed to install/upgrade: package libc6-i386 is already installed and configured

[Chris Brantley]

During attempt to switch graphics card driver through "Additional Drivers" interface, this error came up

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: libc6-i386 2.23-0ubuntu9
ProcVersionSignature: Ubuntu 4.10.0-33.37~16.04.1-generic 4.10.17
Uname: Linux 4.10.0-33-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.10
AptdaemonVersion: 1.1.1+bzr982-0ubuntu14
Architecture: amd64
Date: Tue Sep 12 12:14:55 2017
Dependencies:
 gcc-6-base 6.0.1-0ubuntu1
 libc6 2.23-0ubuntu9
 libgcc1 1:6.0.1-0ubuntu1
ErrorMessage: package libc6-i386 is already installed and configured
InstallationDate: Installed on 2017-09-10 (2 days ago)
InstallationMedia: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801)
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.2
 apt 1.2.24
SourcePackage: dpkg
Title: package libc6-i386 2.23-0ubuntu9 failed to install/upgrade: package libc6-i386 is already installed and configured
UpgradeStatus: No upgrade log present (probably fresh install)