git: 8763579a44e3 - stable/13 - netinet6 tests: test for loss of Solicited-node multicast groups

The branch stable/13 has been updated by kp:

URL: https://cgit.FreeBSD.org/src/commit/?id=8763579a44e31713a6d1b0d9618eeab3eac9d868

commit 8763579a44e31713a6d1b0d9618eeab3eac9d868
Author:     Kristof Provost <kp@FreeBSD.org>
AuthorDate: 2023-07-19 14:37:28 +0000
Commit:     Kristof Provost <kp@FreeBSD.org>
CommitDate: 2023-07-31 12:43:14 +0000

    netinet6 tests: test for loss of Solicited-node multicast groups
    
    The multicast code has an issue where it can lose the Solicited-node
    multicast group subscription if the same address is added twice.
    
    Test for this.
    
    PR:             233683
    MFC after:      1 week
    Sponsored by:   Rubicon Communications, LLC ("Netgate")
    Differential Revision:  https://reviews.freebsd.org/D41123
    
    (cherry picked from commit b03012d0b600793d7501b4cc56757ec6150ec87f)
---
 tests/sys/netinet6/mld.sh | 40 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)

diff --git a/tests/sys/netinet6/mld.sh b/tests/sys/netinet6/mld.sh
index 034d5945ae20..80b7117c3717 100755
--- a/tests/sys/netinet6/mld.sh
+++ b/tests/sys/netinet6/mld.sh
@@ -80,10 +80,50 @@ mldraw01_cleanup() {
 	vnet_cleanup
 }
 
+atf_test_case "pr233683" "cleanup"
+pr233683_head() {
+
+	atf_set descr 'Test for PR233683'
+	atf_set require.user root
+}
+
+pr233683_body() {
+	j="mld:pr233683"
+
+	vnet_init
+
+	epair=$(vnet_mkepair)
+
+	vnet_mkjail ${j}a ${epair}a
+	jexec ${j}a ifconfig ${epair}a inet6 2001:db8::1/64 up
+	sleep 5
+
+	jexec ${j}a ifconfig ${epair}a inet6 2001:db8::1/64
+
+	vnet_mkjail ${j}b ${epair}b
+	jexec ${j}b ifconfig ${epair}b inet6 2001:db8::2/64 up
+
+	# Allow DAD to run
+	sleep 5
+
+	# Debug output. If the bug is present we'd expect to not see a
+	# membership for ff02::1:ff00:1
+	jexec ${j}a ifmcstat -i ${epair}a
+	jexec ${j}a ifconfig ${epair}a
+
+	atf_check -s exit:0 -o ignore \
+	    jexec ${j}b ping -6 -c 1 2001:db8::1
+}
+
+pr233683_cleanup() {
+
+	vnet_cleanup
+}
 atf_init_test_cases()
 {
 
 	atf_add_test_case "mldraw01"
+	atf_add_test_case "pr233683"
 }
 
 # end