K 10
svn:author
V 7
rscheff
K 8
svn:date
V 27
2022-11-10T07:48:12.796936Z
K 7
svn:log
V 615
ipfw: Have NAT steal the TH_RES1 bit, instead of the TH_AE bit

The NAT module use of the tcphdr.th_x2 field now collides with the
use of this TCP header flag as AccECN (AE) bit. Use the topmost
bit instead to allow negotiation of AccECN across a NAT device.

Event:			IETF 115 Hackathon
Reviewed By:		#transport, tuexen
MFC after:		3 days
Approved by:		re (gjb, early-MFC)
Sponsored by:		NetApp, Inc.
Differential Revision:	https://reviews.freebsd.org/D37300

(cherry picked from commit 0b00b801493aa1d4996b0891ea58fbef343f85df)

Git Hash:   9839a5ad3a683c3841ec00c9e1a4d551dcf9c1de
Git Author: rscheff@FreeBSD.org
END