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From d58192a8d2810271d5c6525dc66ba1e1ec3fd2b7 Mon Sep 17 00:00:00 2001
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From: Phil Sutter <psutter@redhat.com>
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Date: Wed, 12 Feb 2020 22:39:44 +0100
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Subject: [PATCH] doc: nft.8: Mention wildcard interface matching
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Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1763652
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Upstream Status: nftables commit 03d45ad330a25
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commit 03d45ad330a25323610648bb05f550e0fb9d65b2
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Author: Phil Sutter <phil@nwl.cc>
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Date: Thu Feb 6 12:24:51 2020 +0100
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doc: nft.8: Mention wildcard interface matching
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Special meaning of asterisk in interface names wasn't described
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anywhere.
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Signed-off-by: Phil Sutter <phil@nwl.cc>
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---
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doc/primary-expression.txt | 7 +++++++
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1 file changed, 7 insertions(+)
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diff --git a/doc/primary-expression.txt b/doc/primary-expression.txt
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index 5473d59..a5cab9d 100644
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--- a/doc/primary-expression.txt
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+++ b/doc/primary-expression.txt
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@@ -36,6 +36,13 @@ add such a rule, it will stop matching if the interface gets renamed and it
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will match again in case interface gets deleted and later a new interface
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with the same name is created.
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+Like with iptables, wildcard matching on interface name prefixes is available for
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+*iifname* and *oifname* matches by appending an asterisk (*) character. Note
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+however that unlike iptables, nftables does not accept interface names
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+consisting of the wildcard character only - users are supposed to just skip
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+those always matching expressions. In order to match on literal asterisk
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+character, one may escape it using backslash (\).
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+
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.Meta expression types
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[options="header"]
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|==================
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--
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1.8.3.1
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