git: cfee1417fbc2 - main - if_vlan tests: Test changing vlan ID

The branch main has been updated by kp:

URL: https://cgit.FreeBSD.org/src/commit/?id=cfee1417fbc2455da144b32ba0e03e626c540859

commit cfee1417fbc2455da144b32ba0e03e626c540859
Author:     Kristof Provost <kp@FreeBSD.org>
AuthorDate: 2022-07-18 22:49:30 +0000
Commit:     Kristof Provost <kp@FreeBSD.org>
CommitDate: 2022-07-21 16:36:01 +0000

    if_vlan tests: Test changing vlan ID
    
    We can now change the vlan ID of an if_vlan interface without
    disassociating it from the parent interface.
    
    Test that this works.
    
    Sponsored by:   Rubicon Communications, LLC ("Netgate")
    Differential Revision:  https://reviews.freebsd.org/D35847
---
 tests/sys/net/if_vlan.sh | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/tests/sys/net/if_vlan.sh b/tests/sys/net/if_vlan.sh
index be1ec788c11d..96426254bb6d 100755
--- a/tests/sys/net/if_vlan.sh
+++ b/tests/sys/net/if_vlan.sh
@@ -29,6 +29,17 @@ basic_body()
 	jexec singsing ifconfig ${vlan1} 10.0.0.2/24 up
 
 	atf_check -s exit:0 -o ignore jexec singsing ping -c 1 10.0.0.1
+
+	# Test changing the vlan ID
+	atf_check -s exit:0 \
+	    jexec singsing ifconfig ${vlan1} vlandev ${epair_vlan}b vlan 43
+	atf_check -s exit:2 -o ignore jexec singsing ping -c 1 10.0.0.1
+
+	# And change back
+	# Test changing the vlan ID
+	atf_check -s exit:0 \
+	    jexec singsing ifconfig ${vlan1} vlandev ${epair_vlan}b vlan 42
+	atf_check -s exit:0 -o ignore jexec singsing ping -c 1 10.0.0.1
 }
 
 basic_cleanup()