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-rw-r--r--doc/primary-expression.txt11
1 files changed, 7 insertions, 4 deletions
diff --git a/doc/primary-expression.txt b/doc/primary-expression.txt
index 48a7609d..a9c39cbb 100644
--- a/doc/primary-expression.txt
+++ b/doc/primary-expression.txt
@@ -123,7 +123,7 @@ integer (32 bit)
pseudo-random number|
integer (32 bit)
|ipsec|
-boolean|
+true if packet was ipsec encrypted |
boolean (1 bit)
|iifkind|
Input interface kind |
@@ -162,7 +162,7 @@ Device group (32 bit number). Can be specified numerically or as symbolic name d
Packet type: *host* (addressed to local host), *broadcast* (to all),
*multicast* (to group), *other* (addressed to another host).
|ifkind|
-Interface kind (16 byte string). Does not have to exist.
+Interface kind (16 byte string). See TYPES in ip-link(8) for a list.
|time|
Either an integer or a date in ISO format. For example: "2019-06-06 17:00".
Hour and seconds are optional and can be omitted if desired. If omitted,
@@ -183,11 +183,12 @@ For example, 17:00 and 17:00:00 would be equivalent.
-----------------------
# qualified meta expression
filter output meta oif eth0
+filter forward meta iifkind { "tun", "veth" }
# unqualified meta expression
filter output oif eth0
-# packet was subject to ipsec processing
+# incoming packet was subject to ipsec processing
raw prerouting meta ipsec exists accept
-----------------------
@@ -362,13 +363,15 @@ Routing Realm (32 bit number). Can be specified numerically or as symbolic name
--------------------------
# IP family independent rt expression
filter output rt classid 10
-filter output rt ipsec missing
# IP family dependent rt expressions
ip filter output rt nexthop 192.168.0.1
ip6 filter output rt nexthop fd00::1
inet filter output rt ip nexthop 192.168.0.1
inet filter output rt ip6 nexthop fd00::1
+
+# outgoing packet will be encapsulated/encrypted by ipsec
+filter output rt ipsec exists
--------------------------
IPSEC EXPRESSIONS