Remove duplicate word

share/man/man4/netgraph.4

@@ -300,7 +300,7 @@ Three other methods are also supported by all nodes:
 An mbuf chain is passed to the node.
 The node is notified on which hook the data arrived,
 and can use this information in its processing decision.
-The node must must always 
+The node must always 
 .Fn m_freem
 the mbuf chain on completion or error, or pass it on to another node
 (or kernel module) which will then be responsible for freeing it.

sys/modules/netgraph/netgraph/netgraph.4

@@ -300,7 +300,7 @@ Three other methods are also supported by all nodes:
 An mbuf chain is passed to the node.
 The node is notified on which hook the data arrived,
 and can use this information in its processing decision.
-The node must must always 
+The node must always 
 .Fn m_freem
 the mbuf chain on completion or error, or pass it on to another node
 (or kernel module) which will then be responsible for freeing it.

sys/net/if_vlan.c

@@ -36,7 +36,7 @@
  * we need to pretend to be enough of an Ethernet implementation
  * to make arp work.  The way we do this is by telling everyone
  * that we are an Ethernet, and then catch the packets that
- * ether_output() left on our output queue queue when it calls
+ * ether_output() left on our output queue when it calls
  * if_start(), rewrite them for use by the real outgoing interface,
  * and ask it to send them.
  *