Signed-off-by: Angus Salkeld <[email protected]>
---
 man/corosync.conf.5 |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/man/corosync.conf.5 b/man/corosync.conf.5
index 6ab94f7..3e98dbd 100644
--- a/man/corosync.conf.5
+++ b/man/corosync.conf.5
@@ -119,6 +119,10 @@ mcastport
 This specifies the UDP port number.  It is possible to use the same multicast
 address on a network with the corosync services configured for different
 UDP ports.
+Please note corosync uses two UDP ports mcastport (for mcast receives) and 
+mcastport - 1 (for mcast sends).
+If you have multiple clusters on the same network using the same mcastaddr 
+please configure the mcastports with a gap.
 
 .PP
 .PP
-- 
1.6.6.1


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