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authorOndrej Zajicek (work) <santiago@crfreenet.org>2017-04-26 17:13:45 +0200
committerOndrej Zajicek (work) <santiago@crfreenet.org>2017-04-26 17:13:45 +0200
commit5ca4bd5d9018bb7572f10825e1ca431444601be7 (patch)
tree65c387964012ea30c6eed624360a556751489d79 /doc/bird.sgml
parenta1de692a6999106c645a7b28d4124b68f63bd6f5 (diff)
Flowspec: Max tcp mask length is 12 bits
Diffstat (limited to 'doc/bird.sgml')
-rw-r--r--doc/bird.sgml3
1 files changed, 2 insertions, 1 deletions
diff --git a/doc/bird.sgml b/doc/bird.sgml
index 0e072dd2..4bbcb871 100644
--- a/doc/bird.sgml
+++ b/doc/bird.sgml
@@ -768,7 +768,8 @@ logical operators <cf/&&/ or <cf/||/. Allowed relational operators are <cf/=/,
<tag><label id="flow-tcp-flags">tcp flags <m/bitmask-match/</tag>
Set a matching bitmask for TCP header flags (aka control bits) (e.g.
- <cf>tcp flags 0x03/0x0f;</cf>).
+ <cf>tcp flags 0x03/0x0f;</cf>). The maximum length of mask is 12 bits
+ (0xfff).
<tag><label id="flow-length">length <m/numbers-match/</tag>
Set a matching packet length (e.g. <cf>length > 1500;</cf>)