Author: glebius
Date: Sat Sep 29 10:49:02 2012
New Revision: 241045
URL: http://svn.freebsd.org/changeset/base/241045
Log:
Give a clue how to force tcpdump(8) to interpret correctly CARP packets.
Modified:
head/share/man/man4/carp.4
Modified: head/share/man/man4/carp.4
==============================================================================
--- head/share/man/man4/carp.4 Sat Sep 29 08:11:12 2012 (r241044)
+++ head/share/man/man4/carp.4 Sat Sep 29 10:49:02 2012 (r241045)
@@ -26,7 +26,7 @@
.\"
.\" $FreeBSD$
.\"
-.Dd May 30, 2012
+.Dd September 29, 2012
.Dt CARP 4
.Os
.Sh NAME
@@ -287,6 +287,19 @@ notify 0 {
action "/root/carpcontrol.sh $subsystem $type";
};
.Ed
+.Pp
+To see
+.Nm
+packets decoded in
+.Xr tcpdump 8
+output, one needs to specify
+.Fl T Ar carp
+option, otherwise
+.Xr tcpdump 8
+tries to interpret them as VRRP packets:
+.Bd -literal -offset indent
+tcpdump -npi vlan0 -T carp
+.Ed
.Sh SEE ALSO
.Xr inet 4 ,
.Xr pfsync 4 ,
@@ -294,6 +307,7 @@ notify 0 {
.Xr devd.conf 5 ,
.Xr ifconfig 8 ,
.Xr sysctl 8
+.Xr tcpdump 8
.Sh HISTORY
The
.Nm
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