I’m trying to see how common the (old) CentOS 6 / RedHat 6 is as it 
becomes increasingly difficult
to support.
If you or anyone you know still uses CentOS 6 or RedHat 6 with FRR, then 
please speak up.
Regards,
    Martin Winter
PS: CentOS / RedHat 7 is not affected - Just version 6.x