split manpages into per-extension manpage snippet (Henrik Nordstrom)
add lots of missing manpage snippets (Harald Welte)
diff --git a/extensions/libipt_tcpmss.man b/extensions/libipt_tcpmss.man
new file mode 100644
index 0000000..5115d6b
--- /dev/null
+++ b/extensions/libipt_tcpmss.man
@@ -0,0 +1,4 @@
+This matches the TCP MSS (maximum segment size) field of the TCP header. You can only use this on TCP SYN or SYN/ACK packets, since the MSS is only negotiated during the TCP handshake at connection startup time.
+.TP
+.BI "[!] "--mss " "value[:value]"
+Match a given TCP MSS value or range.