Commit 49964c29 authored by Andreas Gustafsson's avatar Andreas Gustafsson
Browse files

reviewed and edited; note that IPv6 reverse lookups are now

supported
parent 1f880b54
......@@ -13,7 +13,7 @@
.\" NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
.\" WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.\"
.\" $Id: host.1,v 1.3 2000/08/01 01:18:42 tale Exp $
.\" $Id: host.1,v 1.4 2000/08/15 20:11:54 gson Exp $
.\"
.Dd Jun 30, 2000
.Dt HOST 1
......@@ -24,7 +24,7 @@
.Nd DNS lookup utility
.Sh SYNOPSIS
.Nm host
.Op Fl aCdlrTwv
.Op Fl aCdlnrTwv
.Op Fl c Ar class
.Op Fl N Ar ndots
.Op Fl R Ar number
......@@ -42,7 +42,8 @@ prints a short summary of its command line arguments and options.
.Pp
.Ar name
is the domain name that is to be looked up.
It can also be a dotted-decimal string representing an IPv4 address,
It can also be a dotted-decimal IPv4 address
or a colon-delimited IPv6 address,
in which case
.Nm host
will by default perform a reverse lookup for that address.
......@@ -104,6 +105,12 @@ The argument is provided for compatibility with older implemementations.
This option is equivalent to making a query of type AXFR.
.Pp
The
.Fl n
option specifies that reverse lookups of IPv6 addresses should
use the IP6.INT domain and "nibble" labels as defined in RFC1886.
The default is to use IP6.ARPA and binary labels as defined in RFC2874.
.Pp
The
.Fl N
option sets the number of dots that have to be in
.Ar name
......@@ -141,7 +148,7 @@ Setting this option clears the
- recursion desired - bit in the query which
.Nm host
makes.
This should mean that the name server receiving the query will not attemp
This should mean that the name server receiving the query will not attempt
to resolve
.Ar name .
The
......@@ -158,8 +165,8 @@ uses UDP when making queries.
The
.Fl T
option makes it use a TCP connection when querying the name server.
TCP queries will be automatically made when the query type requires
that a TCP connection: zone transfer (AXFR) requests for example.
TCP will be automatically selected for queries that require it,
such as zone transfer (AXFR) requests.
.Pp
The
.Fl t
......@@ -169,14 +176,14 @@ can be any recognised query type: CNAME, NS, SOA, SIG, KEY, AXFR, etc.
When no query type is specified,
.Nm host
automatically selects an appropriate query type.
By default it looks for A records unless the
By default it looks for A records, but if the
.Fl C
option is supplied or
option was given, queries will be made for SOA records,
and if
.Ar name
is a dotted-decimal IPv4 address.
These will make
is a dotted-decimal IPv4 address or colon-delimited IPv6 address,
.Nm host
look for SOA and PTR records respectively.
will query for PTR records.
.Pp
The time to wait for a reply can be controlled through the
.Fl W
......@@ -207,12 +214,3 @@ given by the hardware's maximum value for an integer quantity.
.Xr dig 1 ,
.Xr resolver 5
.Xr named 8 .
.Sh BUGS
.Nm host
does not yet know how to handle command line arguments that are IPv6
addresses, even though the record types for those addresses are
fully supported by the BIND9 DNS library.
.Pp
Apart from this self-contradicting sentence, the
.Fl D
option is undocumented.
......@@ -13,7 +13,7 @@
.\" NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
.\" WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.\"
.\" $Id: host.1,v 1.3 2000/08/01 01:18:42 tale Exp $
.\" $Id: host.1,v 1.4 2000/08/15 20:11:54 gson Exp $
.\"
.Dd Jun 30, 2000
.Dt HOST 1
......@@ -24,7 +24,7 @@
.Nd DNS lookup utility
.Sh SYNOPSIS
.Nm host
.Op Fl aCdlrTwv
.Op Fl aCdlnrTwv
.Op Fl c Ar class
.Op Fl N Ar ndots
.Op Fl R Ar number
......@@ -42,7 +42,8 @@ prints a short summary of its command line arguments and options.
.Pp
.Ar name
is the domain name that is to be looked up.
It can also be a dotted-decimal string representing an IPv4 address,
It can also be a dotted-decimal IPv4 address
or a colon-delimited IPv6 address,
in which case
.Nm host
will by default perform a reverse lookup for that address.
......@@ -104,6 +105,12 @@ The argument is provided for compatibility with older implemementations.
This option is equivalent to making a query of type AXFR.
.Pp
The
.Fl n
option specifies that reverse lookups of IPv6 addresses should
use the IP6.INT domain and "nibble" labels as defined in RFC1886.
The default is to use IP6.ARPA and binary labels as defined in RFC2874.
.Pp
The
.Fl N
option sets the number of dots that have to be in
.Ar name
......@@ -141,7 +148,7 @@ Setting this option clears the
- recursion desired - bit in the query which
.Nm host
makes.
This should mean that the name server receiving the query will not attemp
This should mean that the name server receiving the query will not attempt
to resolve
.Ar name .
The
......@@ -158,8 +165,8 @@ uses UDP when making queries.
The
.Fl T
option makes it use a TCP connection when querying the name server.
TCP queries will be automatically made when the query type requires
that a TCP connection: zone transfer (AXFR) requests for example.
TCP will be automatically selected for queries that require it,
such as zone transfer (AXFR) requests.
.Pp
The
.Fl t
......@@ -169,14 +176,14 @@ can be any recognised query type: CNAME, NS, SOA, SIG, KEY, AXFR, etc.
When no query type is specified,
.Nm host
automatically selects an appropriate query type.
By default it looks for A records unless the
By default it looks for A records, but if the
.Fl C
option is supplied or
option was given, queries will be made for SOA records,
and if
.Ar name
is a dotted-decimal IPv4 address.
These will make
is a dotted-decimal IPv4 address or colon-delimited IPv6 address,
.Nm host
look for SOA and PTR records respectively.
will query for PTR records.
.Pp
The time to wait for a reply can be controlled through the
.Fl W
......@@ -207,12 +214,3 @@ given by the hardware's maximum value for an integer quantity.
.Xr dig 1 ,
.Xr resolver 5
.Xr named 8 .
.Sh BUGS
.Nm host
does not yet know how to handle command line arguments that are IPv6
addresses, even though the record types for those addresses are
fully supported by the BIND9 DNS library.
.Pp
Apart from this self-contradicting sentence, the
.Fl D
option is undocumented.
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