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-rw-r--r--share/man/man4/if_bridge.43
1 files changed, 3 insertions, 0 deletions
diff --git a/share/man/man4/if_bridge.4 b/share/man/man4/if_bridge.4
index 0a927e5..0a8c624 100644
--- a/share/man/man4/if_bridge.4
+++ b/share/man/man4/if_bridge.4
@@ -133,6 +133,9 @@ the filter for processing.
Note that packets to and from the bridging host will be seen by the
filter on the interface with the appropriate address configured as well
as on the interface on which the packet arrives or departs.
+.Pp
+The MTU of the first member interface to be added is used as the bridge MTU,
+all additional members are required to have exactly the same value.
.Sh EXAMPLES
The following when placed in the file
.Pa /etc/rc.conf
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