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authorPhil Sutter <phil@nwl.cc>2022-06-23 17:49:20 +0200
committerFlorian Westphal <fw@strlen.de>2022-07-28 09:45:11 +0200
commit446e76dbde713327358f17a8af6ce86b8541c836 (patch)
tree0617eccd45bae71a02a9e7e7255d99b3ef60f077 /doc
parenta2ddb38f7eb818312c50be78028bc35145c039ae (diff)
doc: Document limitations of ipsec expression with xfrm_interface
Point at a possible solution to match IPsec info of locally generated traffic routed to an xfrm-type interface. Signed-off-by: Phil Sutter <phil@nwl.cc> Signed-off-by: Florian Westphal <fw@strlen.de>
Diffstat (limited to 'doc')
-rw-r--r--doc/primary-expression.txt4
1 files changed, 4 insertions, 0 deletions
diff --git a/doc/primary-expression.txt b/doc/primary-expression.txt
index f97778b9..4d6b0878 100644
--- a/doc/primary-expression.txt
+++ b/doc/primary-expression.txt
@@ -428,6 +428,10 @@ Destination address of the tunnel|
ipv4_addr/ipv6_addr
|=================================
+*Note:* When using xfrm_interface, this expression is not useable in output
+hook as the plain packet does not traverse it with IPsec info attached - use a
+chain in postrouting hook instead.
+
NUMGEN EXPRESSION
~~~~~~~~~~~~~~~~~