<para>If the address string is a
single number it is read as port
- number to listen on for both IPv4 and
- IPv6.</para>
+ number to listen on via
+ IPv6. Depending on the value of
+ <varname>BindIPv6Only=</varname> (see below) this
+ might result in the service being
+ available via both IPv6 and IPv4 (default) or
+ just via IPv6.
+ </para>
<para>If the address string is a
string in the format v.w.x.y:z it is
<para>If the address string is a
string in the format [x]:y it is read
- as IPv6 address x on a port y.</para>
+ as IPv6 address x on a port y. Note
+ that this might make the service
+ available via IPv4, too, depending on
+ the <varname>BindIPv6Only=</varname>
+ setting (see below).
+ </para>
<para>Note that SOCK_SEQPACKET
(i.e. <varname>ListenSequentialPacket=</varname>)
<listitem><para>Specifies a file
system FIFO to listen on. This expects
an absolute file system path as
- argument. Behaviour otherwise is very
+ argument. Behavior otherwise is very
similar to the
<varname>ListenDatagram=</varname>
directive above.</para></listitem>
<listitem><para>Specifies a special
file in the file system to listen
on. This expects an absolute file
- system path as argument. Behaviour
+ system path as argument. Behavior
otherwise is very similar to the
<varname>ListenFIFO=</varname>
directive above. Use this to open
or <varname>kobject-uevent</varname>)
as argument, optionally suffixed by a
whitespace followed by a multicast
- group integer. Behaviour otherwise is
+ group integer. Behavior otherwise is
very similar to the
<varname>ListenDatagram=</varname>
directive above.</para></listitem>
<listitem><para>Specifies a POSIX
message queue name to listen on. This
expects a valid message queue name
- (i.e. beginning with /). Behaviour
+ (i.e. beginning with /). Behavior
otherwise is very similar to the
<varname>ListenFIFO=</varname>
directive above. On Linux message
default, surprise!) the system wide
default setting is used, as controlled
by
- <filename>/proc/sys/net/ipv6/bindv6only</filename>.</para>
+ <filename>/proc/sys/net/ipv6/bindv6only</filename>,
+ which in turn defaults to the
+ equivalent of
+ <option>both</option>.</para>
</listitem>
</varlistentry>