diff options
Diffstat (limited to 'doc/bird.sgml')
| -rw-r--r-- | doc/bird.sgml | 3 |
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>) |