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netfilter: conntrack: remove ignore stats

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This counter increments when nf_conntrack_in sees a packet that already
has a conntrack attached or when the packet is marked as UNTRACKED.
Neither is an error.

The former is normal for loopback traffic.  The second happens for
certain ICMPv6 packets or when nftables/ip(6)tables rules are in place.

In case someone needs to count UNTRACKED packets, or packets
that are marked as untracked before conntrack_in this can be done with
both nftables and ip(6)tables rules.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Florian Westphal
2020-08-26 00:52:43 +02:00
committed by Pablo Neira Ayuso
parent b1328e54ac
commit 4afc41dfa5
5 changed files with 3 additions and 7 deletions
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2
include/uapi/linux/netfilter/nfnetlink_conntrack.h
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@@ -247,7 +247,7 @@ enum ctattr_stats_cpu {
CTA_STATS_FOUND,
CTA_STATS_NEW, /* no longer used */
CTA_STATS_INVALID,
CTA_STATS_IGNORE,
CTA_STATS_IGNORE, /* no longer used */
CTA_STATS_DELETE, /* no longer used */
CTA_STATS_DELETE_LIST, /* no longer used */
CTA_STATS_INSERT,