package libssl-dev 1.0.2g-1 failed to install/upgrade: trying to overwrite shared '/usr/include/openssl/opensslv.h', which is different from other instances of package libssl-dev:amd64

[Mohamed]

The following packages will be upgraded:
  libssl-dev
1 upgraded, 0 newly installed, 0 to remove and 417 not upgraded.
3 not fully installed or removed.
Need to get 0 B/1,344 kB of archives.
After this operation, 229 kB disk space will be freed.
Do you want to continue? [Y/n] Y
(Reading database ... 230954 files and directories currently installed.)
Preparing to unpack .../libssl-dev_1.0.2g-1ubuntu4.5_amd64.deb ...
Unpacking libssl-dev:amd64 (1.0.2g-1ubuntu4.5) over (1.0.2g-1) ...
dpkg: error processing archive /var/cache/apt/archives/libssl-dev_1.0.2g-1ubuntu4.5_amd64.deb (--unpack):
 trying to overwrite shared '/usr/include/openssl/opensslv.h', which is different from other instances of package libssl-dev:amd64
dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)
Errors were encountered while processing:
 /var/cache/apt/archives/libssl-dev_1.0.2g-1ubuntu4.5_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: libssl-dev 1.0.2g-1
ProcVersionSignature: Ubuntu 4.4.0-45.66-generic 4.4.21
Uname: Linux 4.4.0-45-generic x86_64
ApportVersion: 2.20.1-0ubuntu2
AptOrdering:
 libssl-dev: Install
 zlib1g-dev: Configure
 libssl-dev: Configure
 libssl-dev: Configure
 NULL: ConfigurePending
Architecture: amd64
Date: Thu Nov 24 17:56:05 2016
ErrorMessage: trying to overwrite shared '/usr/include/openssl/opensslv.h', which is different from other instances of package libssl-dev:amd64
InstallationDate: Installed on 2016-10-25 (30 days ago)
InstallationMedia: It
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1
 apt 1.2.10ubuntu1
SourcePackage: openssl
Title: package libssl-dev 1.0.2g-1 failed to install/upgrade: trying to overwrite shared '/usr/include/openssl/opensslv.h', which is different from other instances of package libssl-dev:amd64
UpgradeStatus: No upgrade log present (probably fresh install)

[Adrien Nader (adrien)]

This error started a couple hours only after the user installed "oracle-java6-installer" with only an "apt -f install". I suspect the system was already broken at that point, possibly due to the java6 install or to user changes to make it work if it wasn't working immediately.

I was thinking of making this Incomplete at first but thinking more about this, I'm more inclined to mark it as Invalid.