Binary package “libnss-resolve” in ubuntu xenial

nss module to resolve names via systemd-resolved

 nss-resolve is a plugin for the GNU Name Service Switch (NSS) functionality
 of the GNU C Library (glibc) providing DNS and LLMNR resolution to programs via
 the systemd-resolved daemon (provided in the systemd package).
 .
 Installing this package automatically adds resolve to /etc/nsswitch.conf.