Hi,

I'd like to resurrect this diff I proposed, but then neglected in 2021. 
The changed paragraph would read like this:

The 802.1Q and 802.1ad protocols include a Priority Code Point (PCP).  By
default, the 802.1p PCP in a transmitted packet is based on the priority
of packets sent over the interface, which may be altered via pf.conf(5);
see the prio option for more information.  Alternatively, the ifconfig(4)
txprio option can set a specific priority for transmitted packets.  On
vlan and svlan interfaces priorities 2 to 7 will be mapped directly to
PCP 2 to 7, but priorities 0 and 1 are mapped backwards, to PCP 1 and 0,
respectively.  This is because 802.1p defines PCP 1 as the lowest
priority and PCP 0 as the second lowest priority, which is meant to be
used as the default.

Suggestions by Theo and Jason McIntyre have been applied. Is this ok to 
be committed?

Christopher
Index: vlan.4
===================================================================
RCS file: /cvs/src/share/man/man4/vlan.4,v
retrieving revision 1.53
diff -u -p -r1.53 vlan.4
--- vlan.4	12 Sep 2022 09:15:29 -0000	1.53
+++ vlan.4	25 Jan 2025 21:23:29 -0000
@@ -83,17 +83,26 @@ interfaces by their respective protocol 
 identifiers, and decapsulated for reception on the associated virtual
 interfaces.
 .Pp
-The 802.1Q and 802.1ad protocols include a priority field.
-By default, the 802.1p priority in a transmitted packet is based on the
+The 802.1Q and 802.1ad protocols include a Priority Code Point (PCP).
+By default, the 802.1p PCP in a transmitted packet is based on the
 priority of packets sent over the interface, which may
 be altered via
 .Xr pf.conf 5 ;
 see the
 .Cm prio
 option for more information.
-Alternatively,
+Alternatively, the
+.Xr ifconfig 4
 .Cm txprio
-can set a specific priority for transmitted packets.
+option can set a specific priority for transmitted packets.
+On
+.Nm vlan
+and
+.Nm svlan
+interfaces priorities 2 to 7 will be mapped directly to PCP 2 to 7, but
+priorities 0 and 1 are mapped backwards, to PCP 1 and 0, respectively.
+This is because 802.1p defines PCP 1 as the lowest priority and PCP 0 as the 
+second lowest priority, which is meant to be used as the default.
 .Pp
 .Nm vlan
 and

• vlan.4.diff (1K)