Comment 6 for bug 940705

I can reproduce with

# dpkg -i libopenconnect1_3.15-0ubuntu1_amd64.deb libopenconnect-dev_3.15-0ubuntu1_amd64.deb openconnect_3.15-0ubuntu1_amd64.deb
…
# dpkg -i libopenconnect-dev_3.15-0ubuntu2_amd64.deb libopenconnect1_3.15-0ubuntu2_amd64.deb openconnect_3.15-0ubuntu2_amd64.deb
(Reading database ... 440769 files and directories currently installed.)
Preparing to replace libopenconnect-dev 3.15-0ubuntu1 (using libopenconnect-dev_3.15-0ubuntu2_amd64.deb) ...
Unpacking replacement libopenconnect-dev ...
dpkg: error processing libopenconnect-dev_3.15-0ubuntu2_amd64.deb (--install):
 trying to overwrite '/usr/lib/libopenconnect.a', which is also in package libopenconnect1 3.15-0ubuntu1
dpkg: considering removing libopenconnect-dev in favour of libopenconnect1 ...
dpkg: yes, will remove libopenconnect-dev in favour of libopenconnect1.
Preparing to replace libopenconnect1 3.15-0ubuntu1 (using libopenconnect1_3.15-0ubuntu2_amd64.deb) ...
Unpacking replacement libopenconnect1 ...
Preparing to replace openconnect 3.15-0ubuntu1 (using openconnect_3.15-0ubuntu2_amd64.deb) ...
Unpacking replacement openconnect ...
Setting up libopenconnect1 (3.15-0ubuntu2) ...
Setting up openconnect (3.15-0ubuntu2) ...
Processing triggers for man-db ...
Processing triggers for libc-bin ...
ldconfig deferred processing now taking place
Errors were encountered while processing:
 libopenconnect-dev_3.15-0ubuntu2_amd64.deb