NSS-RESOLVE(8) nss-resolve NSS-RESOLVE(8) nss-resolve libnss_resolve.so.2 - systemd-resolved.service libnss_resolve.so.2 nss-resolve (NSS) (glibc) systemd-resolved(8). nss-dns DNS. NSS "resolve [!UNAVAIL=return]" "hosts:" /etc/nsswitch.conf. "resolve" "hosts:" /etc/nsswitch.conf. "files" systemd-resolved /etc/hosts . "mymachines" DNS. "dns" "resolve" nss-dns systemd-resolved.service . systemd-resolved DNS "localhost" systemd-resolved(8) . nss-myhostname(8) ( ) nss-myhostname /etc/nsswitch.conf systemd-resolved . nss-myhostname ( nss-resolve) -- IP . DNS . nss-resolve systemd-resolved.service /run/systemd/resolve/io.systemd.Resolve AF_UNIX. $SYSTEMD_NSS_RESOLVE_VALIDATE . DNSSEC. . 250. $SYSTEMD_NSS_RESOLVE_SYNTHESIZE . . systemd-resolved.service(8) . "" . 250. $SYSTEMD_NSS_RESOLVE_CACHE . systemd-resolved(8). 250. $SYSTEMD_NSS_RESOLVE_ZONE . LLMNR/mDNS . 250. $SYSTEMD_NSS_RESOLVE_TRUST_ANCHOR . . 250. $SYSTEMD_NSS_RESOLVE_NETWORK . systemd-resolved(8). 250. $SYSTEMD_NSS_RESOLVE_INTERFACE . . 260. /etc/nsswitch.conf nss-resolve : passwd: files systemd group: files [SUCCESS=merge] systemd shadow: files systemd gshadow: files systemd hosts: mymachines resolve [!UNAVAIL=return] files myhostname dns networks: files : db : db ethers: db rpc: db netgroup: nis systemd(1), systemd-resolved(8), nss-systemd(8), nss-myhostname(8), nss-mymachines(8), nsswitch.conf(5), systemd.syntax(7) 3 . . : . systemd 260.1 NSS-RESOLVE(8)