--dnssec-timestamp=<path>

Enables an alternative way of checking the validity of the system time for DNSSEC (see --dnssec-no-timecheck). In this case, the system time is considered to be valid once it becomes later than the timestamp on the specified file. The file is created and its timestamp set automatically by dnsmasq. The file must be stored on a persistent filesystem, so that it and its mtime are carried over system restarts. The timestamp file is created after dnsmasq has dropped root, so it must be in a location writable by the unprivileged user that dnsmasq runs as.