git: 4f524ecb040b - stable/12 - mbuf: PACKET_TAG_PF should not be persistent

The branch stable/12 has been updated by kp:

URL: https://cgit.FreeBSD.org/src/commit/?id=4f524ecb040b532bebef69e943bb110b018daf21

commit 4f524ecb040b532bebef69e943bb110b018daf21
Author:     Kristof Provost <kp@FreeBSD.org>
AuthorDate: 2021-10-26 07:51:33 +0000
Commit:     Kristof Provost <kp@FreeBSD.org>
CommitDate: 2021-11-19 06:35:58 +0000

    mbuf: PACKET_TAG_PF should not be persistent
    
    We should clear firewall tags on loopback, icmp reflection, or if_epair
    transmission. Left over tags can produce unexpected behaviour,
    especially on if_epair where a and b interfaces can be in different
    vnets, and have different firewall policies set.
    
    MFC after:      3 weeks
    Sponsored by:   Rubicon Communications, LLC ("Netgate")
    Differential Revision:  https://reviews.freebsd.org/D32664
    
    (cherry picked from commit 7fe0c3f8d3303b67e55e3abcd66cbd4a9eaa1a0d)
---
 sys/sys/mbuf.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sys/sys/mbuf.h b/sys/sys/mbuf.h
index 127dae75726f..7d3bc98eb5f6 100644
--- a/sys/sys/mbuf.h
+++ b/sys/sys/mbuf.h
@@ -1150,7 +1150,7 @@ extern int		nmbclusters;	/* Maximum number of clusters */
 #define	PACKET_TAG_DIVERT			17 /* divert info */
 #define	PACKET_TAG_IPFORWARD			18 /* ipforward info */
 #define	PACKET_TAG_MACLABEL	(19 | MTAG_PERSISTENT) /* MAC label */
-#define	PACKET_TAG_PF		(21 | MTAG_PERSISTENT) /* PF/ALTQ information */
+#define	PACKET_TAG_PF				21 /* PF/ALTQ information */
 #define	PACKET_TAG_RTSOCKFAM			25 /* rtsock sa family */
 #define	PACKET_TAG_IPOPTIONS			27 /* Saved IP options */
 #define	PACKET_TAG_CARP				28 /* CARP info */