RESOLVD(8) | System Manager's Manual | RESOLVD(8)

# NAME

`resolvd` — a daemon to handle nameserver configuration

# SYNOPSIS

`resolvd` | [`-dv`]

# DESCRIPTION

`resolvd` handles the contents of /etc/resolv.conf, which contains details of the system's DNS nameservers, and is read by the resolver routines in the C library. Nameservers are learned from various sources, incorporated in a priority order, then user-edited information found in the pre-existing file is re-appended.

`resolvd` checks whether unwind(8) is running and, if so, places a nameserver line at the top to cause local resolution:

`nameserver 127.0.0.1`

`resolvd` also monitors the routing socket for proposals learned by dhcpleased(8), iked(8), slaacd(8), or network devices which natively learn DNS information such as sppp(4) or umb(4). Proposals can be sent manually using the route(8) `nameserver` command. The proposals are added in priority order, but commented out if unwind(8) is running.

After that, `resolvd` appends all user-edited lines found in the file.

`resolvd` also notices if the /etc/resolv.conf file is edited, and will rewrite the file, re-blending the various pieces of information. It will also create /etc/resolv.conf if it does not exist or if it is empty.

The options are as follows:

`-d`
  Do not daemonize. If this option is specified, `resolvd` will run in the foreground and log to stderr.
`-v`
  Produce more verbose output.

# SEE ALSO

resolv.conf(5), dhcpleased(8), route(8), slaacd(8), unwind(8)

# HISTORY

The `resolvd` program first appeared in OpenBSD 6.9.

February 21, 2023 | Debian