Bug 1659308

Summary:	[RHEL8]xtables-nft-multi maybe not check rule as strict as old iptables.
Product:	Red Hat Enterprise Linux 8	Reporter:	yiche <yiche>
Component:	iptables	Assignee:	Phil Sutter <psutter>
Status:	CLOSED DUPLICATE	QA Contact:	qe-baseos-daemons
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	8.0	CC:	iptables-maint-list, todoleza
Target Milestone:	rc
Target Release:	8.0
Hardware:	Unspecified
OS:	Unspecified
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Fixed In Version:		Doc Type:	If docs needed, set a value
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Clone Of:		Environment:
Last Closed:	2018-12-18 15:44:27 UTC	Type:	Bug
Regression:	---	Mount Type:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description yiche 2018-12-14 03:23:25 UTC

Description of problem:
xtables-nft-multi maybe not check rule as strict as old iptables.

Version-Release number of selected component (if applicable):
iptables v1.8.1 (nf_tables)

How reproducible:
always

Steps to Reproduce:
iptables -t mangle -A OUTPUT -p tcp -j TCPMSS --set-mss 135
RHEL7 will give a promptin dmesg: xt_TCPMSS: Only works on TCP SYN packets
but RHEL8 accept this rule without --syn.

Actual results:
accept is rule.

Expected results:
reject this rule and give out prompt.

Additional info:

Comment 1 Phil Sutter 2018-12-18 15:44:27 UTC


*** This bug has been marked as a duplicate of bug 1659307 ***