This keyword specifies how host lookups are to be performed. It should be followed by one or more lookup methods, separated by commas. Valid methods are bind", "hosts", and "nis.
trim
This keyword may be listed more than once. Each time it should be followed by a list of domains, separated by colons (‘:’), semicolons (‘;’) or commas (‘,’), with the leading dot. When set, the resolv+ library will automatically trim the given domain name from the end of any hostname resolved via DNS. This is intended for use with local hosts and domains. (Related note: trim will not affect hostnames gathered via NIS or the hosts file. Care should be taken to ensure that the first hostname for each entry in the hosts file is fully qualified or non-qualified, as appropriate for the local installation.)
multi
Valid values are on" and "off. If set to on, the resolv+ library will return all valid addresses for a host that appears in the /etc/hosts file, instead of only the first. This is off by default, as it may cause a substantial performance loss at sites with large hosts files.
nospoof
Valid values are on" and "off. If set to on, the resolv+ library will attempt to prevent hostname spoofing to enhance the security of rlogin" and "rsh. It works as follows: after performing a host address lookup, resolv+ will perform a hostname lookup for that address. If the two hostnames do not match, the query will fail. The default value is off.
spoofalert
Valid values are on" and "off. If this option is set to on and the nospoof option is also set, resolv+ will log a warning of the error via the syslog facility. The default value is off.
spoof
Valid values are off", "nowarn" and "warn. If this option is set to off, spoofed addresses are permitted and no warnings will be emitted via the syslog facility. If this option is set to warn, resolv+ will attempt to prevent hostname spoofing to enhance the security and log a warning of the error via the syslog facility. If this option is set to nowarn, the resolv+ library will attempt to prevent hostname spoofing to enhance the security but not emit warnings via the syslog facility. Setting this option to anything else is equal to setting it to nowarn.
reorder
Valid values are on" and "off. If set to on, resolv+ will attempt to reorder host addresses so that local addresses (i.e., on the same subnet) are listed first when a gethostbyname(3) is performed. Reordering is done for all lookup methods. The default value is off.
If set this variable points to a file that should be read instead of /etc/host.conf.
RESOLV_SERV_ORDER
Overrides the order command.
RESOLV_SPOOF_CHECK
Overrides the nospoof", "spoofalert" and "spoof commands in the same way as the spoof command is parsed. Valid values are off", "nowarn" and "warn.
RESOLV_MULTI
Overrides the multi command.
RESOLV_REORDER
Overrides the reorder command.
RESOLV_ADD_TRIM_DOMAINS
A list of domains, separated by colons (‘:’), semicolons (‘;’) or commas (‘,’), with the leading dot, which will be added to the list of domains that should be trimmed.
RESOLV_OVERRIDE_TRIM_DOMAINS
A list of domains, separated by colons (‘:’), semicolons (‘;’) or commas (‘,’), with the leading dot, which will replace the list of domains that should be trimmed. Overrides the trim command.
