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Allow option prefix in --synth-domain.

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Simon Kelley
2013-04-25 09:49:38 +01:00
parent 2bb73af7d1
commit 48fd1c4dd6
4 changed files with 103 additions and 69 deletions
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13
man/dnsmasq.8
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@@ -519,17 +519,18 @@ the name. More than one name may be associated with an interface
address by repeating the flag; in that case the first instance is used
for the reverse address-to-name mapping.
.TP
.B --synth-domain=<domain>,<address range>
.B --synth-domain=<domain>,<address range>[,<prefix>]
Create artificial A/AAAA and PTR records for an address range. The
records use the address, with periods (or colons for IPv6) replaced
with dashes.
An example should make this clearer.
.B --synth-domain=thekelleys.org.uk,192.168.0.0/24
will result in a query for 192-168-0-56.thekelleys.org.uk returning
192.168.0.56 and a reverse query vice versa. The same applies to IPv6, but IPv6 addresses may start with '::'
but DNS labels may not start with '-' so in this case a zero is added
in front of the label. ::1 becomes 0--1.
.B --synth-domain=thekelleys.org.uk,192.168.0.0/24,internal-
will result in a query for internal-192-168-0-56.thekelleys.org.uk returning
192.168.0.56 and a reverse query vice versa. The same applies to IPv6,
but IPv6 addresses may start with '::'
but DNS labels may not start with '-' so in this case if no prefix is
configured a zero is added in front of the label. ::1 becomes 0--1.
The address range can be of the form
<ip address>,<ip address> or <ip address>/<netmask>