add note re syslog logging plus some polishing

diff --git a/rrqnet-ifupdown.sh.8.adoc b/rrqnet-ifupdown.sh.8.adoc
index 1b83f841455b17f2edfd424aa83a15c37bb2aa7a..a922977223b18df3cba30524f0a55b610e4ec9f3 100644 (file)
--- a/rrqnet-ifupdown.sh.8.adoc
+++ b/rrqnet-ifupdown.sh.8.adoc
@@ -55,7 +55,9 @@ configuration options ([-4] [-B n] [-T n] [-m mcast]). Refer to the
 
 This IFACE option is used for declaring the log level as one of +-v+,
 +-vv+ or +-vvv+, and to nominate the log file. If omitted, all the
-+rrqnet+ process output will be directed to +/dev/null+.
++rrqnet+ process output will be directed to +/dev/null+. If
+__pathname_ is of the form "facility.priority", then stderr is sent to
++syslog+. Otherwise, stderr is appended to the nominated file.
 
 *rrqnet_bridge* _bridge_::
 
@@ -74,7 +76,7 @@ iface mynet0 inet static
     address 10.0.0.2/24
     broadcast 10.0.0.255
     rrqnet_port 3636
-    rrqnet_options -4
+    rrqnet_options -4 -B 10 -T 1
     rrqnet_remote 111.222.333.444:3636=/sec/mynet.key
     rrqnet_log -v /var/log/mynet0.log
 ----
@@ -86,7 +88,7 @@ the local +tap+, named +mynet0+, has ipv4 address +10.0.0.2+. The
 cabling set up which then is duly handled by +rrqnet-ifupdown.sh+, and
 all its options are used for declaring that tunneling. The
 +rrqnet_options+ in the example tells the +rrqnet+ process to use an
-ipv4-only socket.
+ipv4-only socket, 10 packet buffers and a single delivery thread.
 
 NOTES
 -----
@@ -99,18 +101,18 @@ supervision.
 Note that the +rrqnet+ virtual cable requires real networking for its
 UDP tunnel traffic. The real packets will have a UDP header in
 addition to the orignal packet, which means that it grows packets with
-24 or 48 bytes (for ipv4 and ipv6 respectively). This may cause packet
-fragmentation of the tunneling packets unless the associated +tap+ is
-configured with that much smaller MTU than the real traffic.
+some 28/48 (ipv4/6) bytes. This may cause packet fragmentation of the
+tunneling packets which might be mitigated by configuring the
+associated +tap+ that much smaller MTU.
 
 SEE ALSO
 --------
 
- *interfaces(5)* - network interface configuration for ifup and ifdown
- *rrqnet(8)* - packet tunneling over UDP, multiple channels
  *brctl(8)* - ethernet bridge administration
  *daemon(1)* - turns other processes into daemons
-
+ *interfaces(5)* - network interface configuration for ifup and ifdown
+ *rrqnet(8)* - packet tunneling over UDP, multiple channels
+ 
 AUTHOR
 ------
 Ralph Rönnquist <ralph.ronnquist@gmail.com>