Provided by: libnss-resolve_229-4ubuntu4_amd64
nss-resolve, libnss_resolve.so.2 - Provide hostname resolution via systemd-resolved.service
nss-resolve is a plugin module for the GNU Name Service Switch (NSS) functionality of the GNU C Library (glibc) enabling it to resolve host names via the systemd-resolved(8) local network name resolution service. To activate the NSS module, "resolve" has to be added to the line starting with "hosts:" in /etc/nsswitch.conf. It is recommended to place "resolve" early in the nsswitch.conf line (but after the "files" entry), replacing the "dns" entry if it exists, to ensure DNS queries are always routed via systemd-resolved(8).
Here is an example /etc/nsswitch.conf file that enables resolve correctly: passwd: compat mymachines group: compat mymachines shadow: compat hosts: files resolve mymachines myhostname networks: files protocols: db files services: db files ethers: db files rpc: db files netgroup: nis Note that nss-resolve will chain-load nss-dns if systemd-resolved.service is not running, ensuring that basic DNS resolution continues to work if the service is down.
systemd(1), systemd-resolved(8), nss-mymachines(8), nss-myhostname(8), nsswitch.conf(5)