systemd Developer Lennart Poettering lennart@poettering.net nss-resolve 8 nss-resolve libnss_resolve.so.2 Provide hostname resolution via systemd-resolved.service libnss_resolve.so.2 nss-resolve is a plug-in module for the GNU Name Service Switch (NSS) functionality of the GNU C Library (glibc) enabling it to resolve host names via the systemd-resolved8 local network name resolution service. It replaces the nss-dns plug-in module that traditionally resolves hostnames via DNS. To activate the NSS module, add resolve to the line starting with hosts: in /etc/nsswitch.conf. It is recommended to place resolve early in /etc/nsswitch.conf' hosts: line (but after the files or mymachines entries), replacing the dns entry if it exists, to ensure DNS queries are always routed via systemd-resolved8. 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. Here is an example /etc/nsswitch.conf file that enables nss-resolve correctly: passwd: compat mymachines group: compat mymachines shadow: compat hosts: files mymachines resolve myhostname networks: files protocols: db files services: db files ethers: db files rpc: db files netgroup: nis systemd1, systemd-resolved8, nss-mymachines8, nss-myhostname8, nsswitch.conf5