Virtuozzo Linux Errata and Enhancement Advisory 2017:2500 

Upstream details at : https://access.redhat.com/errata/RHEA-2017:2500

The following updated files have been uploaded and are currently 
syncing to the mirrors:  

i386:
unbound-1.4.20-23.vl6.4.i686.rpm
unbound-devel-1.4.20-23.vl6.4.i686.rpm
unbound-libs-1.4.20-23.vl6.4.i686.rpm
unbound-python-1.4.20-23.vl6.4.i686.rpm

x86_64:
unbound-1.4.20-23.vl6.4.x86_64.rpm
unbound-devel-1.4.20-23.vl6.4.i686.rpm
unbound-devel-1.4.20-23.vl6.4.x86_64.rpm
unbound-libs-1.4.20-23.vl6.4.i686.rpm
unbound-libs-1.4.20-23.vl6.4.x86_64.rpm
unbound-python-1.4.20-23.vl6.4.i686.rpm
unbound-python-1.4.20-23.vl6.4.x86_64.rpm

Source:
unbound-1.4.20-23.vl6.4.src.rpm