Bug 236309

Summary:	axe(4): PF & NAT'd outbound traffic has zero checksums with TXCSUM enabled
Product:	Base System	Reporter:	eborisch+FreeBSD
Component:	kern	Assignee:	freebsd-net (Nobody) <net>
Status:	Open ---
Severity:	Affects Some People	CC:	jeremfg, net, rob2g2-freebsd, sjorge+signup, yongari
Priority:	---	Keywords:	needs-qa, regression
Version:	12.0-RELEASE
Hardware:	amd64
OS:	Any
See Also:	https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=235607

Description eborisch+FreeBSD 2019-03-06 05:26:00 UTC

I have a firewall box where the outbound connection to cable is ue / axe. If txcsum is enabled, PF-NAT-ed outbound traffic has a zero checksum. Locally generated outbound traffic is fine.

Disabling txcsum resolves the issue and restores connectivity through the NAT.

Worked fine on 11.2-p9.

Comment 1 eborisch+FreeBSD 2019-03-06 05:28:28 UTC

Currently on 12.0-RELEASE-p3.

Comment 2 Hans Petter Selasky freebsd_committer

2019-03-06 12:27:42 UTC

Diffing the sources used, reveal no changes. Maybe the problem is some mbuf flags changed for TX checksum offloading?

git diff origin/releng/12.0 origin/releng/11.2 sys/dev/usb/net/if_axe.c

--HPS

Comment 3 Jorge Schrauwen 2019-10-11 16:59:40 UTC

Sounds similar to 235607

Comment 4 Mark Linimon freebsd_committer

2024-10-04 14:37:22 UTC

^Triage: clear stale flags.