lineinfile unexpected behavior

[adam.fr...@gmail.com]

I have the following in a playbook to uncomment a line.  The first time I run it everything works fine.  If I run it again it inserts a "Banner /etc/issue.net" at the EOF.  Is there a better way to do this?

 - name:  uncomment a line
      lineinfile: backup=yes state=present dest=/etc/ssh/sshd_config regexp='^#Banner' line='Banner /etc/issue.net'

[adam.fr...@gmail.com]

I understand the functionality of lineinfile a bit better now and solved this with... 

    - name:  uncomment a line

      lineinfile: backup=yes state=present dest=/etc/ssh/sshd_config regexp='^#?Banner' line='Banner /etc/issue.net'

Also, it appears I can utilize the original regexp with a backrefs=yes to achieve the desired result as well.

Either way I am moving towards using a template.