git: 8829d4cb09d3 - main - pf tests: Lower chances of false positives for mbuf:inet6_in_mbuf_len

From: Igor Ostapenko <igoro_at_FreeBSD.org>
Date: Fri, 18 Oct 2024 16:25:42 UTC
The branch main has been updated by igoro:

URL: https://cgit.FreeBSD.org/src/commit/?id=8829d4cb09d39801d3b6bcf8ab8c6b72dd757636

commit 8829d4cb09d39801d3b6bcf8ab8c6b72dd757636
Author:     Igor Ostapenko <igoro@FreeBSD.org>
AuthorDate: 2024-10-18 16:24:11 +0000
Commit:     Igor Ostapenko <igoro@FreeBSD.org>
CommitDate: 2024-10-18 16:24:11 +0000

    pf tests: Lower chances of false positives for mbuf:inet6_in_mbuf_len
    
    Reviewed by:    kp
    Approved by:    kp (mentor)
    Differential Revision:  https://reviews.freebsd.org/D47175
---
 tests/sys/netpfil/pf/mbuf.sh | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/tests/sys/netpfil/pf/mbuf.sh b/tests/sys/netpfil/pf/mbuf.sh
index a4664718093a..d845f793a969 100644
--- a/tests/sys/netpfil/pf/mbuf.sh
+++ b/tests/sys/netpfil/pf/mbuf.sh
@@ -119,6 +119,11 @@ inet6_in_mbuf_len_body()
 		"pass quick inet6 proto icmp6 icmp6-type { neighbrsol, neighbradv }"
 	atf_check -s not-exit:0 -o ignore ping -c1 -t1 2001:db8::2
 
+	# Avoid redundant ICMPv6 packets to avoid false positives during
+	# counting of net.dummymbuf.hits.
+	ndp -i ${epair}a -- -nud
+	jexec alcatraz ndp -i ${epair}b -- -nud
+
 	# Should be allowed by from/to addresses
 	pft_set_rules alcatraz \
 		"block" \