libbind9-160 1:9.11.3+dfsg-1ubuntu1.7 (amd64 binary) in ubuntu bionic

 The Berkeley Internet Name Domain (BIND) implements an Internet domain
 name server. BIND is the most widely-used name server software on the
 Internet, and is supported by the Internet Software Consortium, www.isc.org.
 .
 This package delivers the libbind9 shared library used by BIND's daemons and
 clients.