Comprehensive spelling/typo fixes.
Thanks to Josh Soref for generating these fixes.
diff --git a/contrib/port-forward/portforward b/contrib/port-forward/portforward
index 1a97c3a..21fdca1 100644
--- a/contrib/port-forward/portforward
+++ b/contrib/port-forward/portforward
@@ -3,7 +3,7 @@
# first column of this file, then a DNAT port-forward will be set up
# to the address which has just been allocated by DHCP . The second field
# is port number(s). If there is only one, then the port-forward goes to
-# the same port on the DHCP-client, if there are two seperated with a
+# the same port on the DHCP-client, if there are two separated with a
# colon, then the second number is the port to which the connection
# is forwarded on the DHCP-client. By default, forwarding is set up
# for TCP, but it can done for UDP instead by prefixing the port to "u".