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-rw-r--r--man/systemd.socket.xml21
1 files changed, 17 insertions, 4 deletions
diff --git a/man/systemd.socket.xml b/man/systemd.socket.xml
index 6cf6c79e11..7885b0748a 100644
--- a/man/systemd.socket.xml
+++ b/man/systemd.socket.xml
@@ -170,8 +170,13 @@
<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
@@ -181,7 +186,12 @@
<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>)
@@ -286,7 +296,10 @@
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>