git: 92d251472edb - main - syslogd/tests: Improve loopback interface initialization

The branch main has been updated by markj:

URL: https://cgit.FreeBSD.org/src/commit/?id=92d251472edba6c1c16a899797982251c585d706

commit 92d251472edba6c1c16a899797982251c585d706
Author:     Mark Johnston <markj@FreeBSD.org>
AuthorDate: 2026-01-22 15:51:42 +0000
Commit:     Mark Johnston <markj@FreeBSD.org>
CommitDate: 2026-01-22 15:51:42 +0000

    syslogd/tests: Improve loopback interface initialization
    
    - In syslogd_start(), assign the lo0 address in the specified jail.
    - Use the correct netmask.
    
    Reviewed by:    jlduran
    MFC after:      2 weeks
    Differential Revision:  https://reviews.freebsd.org/D54799
---
 usr.sbin/syslogd/tests/syslogd_test.sh        | 4 ----
 usr.sbin/syslogd/tests/syslogd_test_common.sh | 8 +++++---
 2 files changed, 5 insertions(+), 7 deletions(-)

diff --git a/usr.sbin/syslogd/tests/syslogd_test.sh b/usr.sbin/syslogd/tests/syslogd_test.sh
index d43473eac12d..d4723b9e05b3 100644
--- a/usr.sbin/syslogd/tests/syslogd_test.sh
+++ b/usr.sbin/syslogd/tests/syslogd_test.sh
@@ -380,10 +380,8 @@ allowed_peer_test_setup()
     atf_check ifconfig ${epair}a vnet syslogd_allowed_peer
     atf_check ifconfig ${epair}b vnet syslogd_client
     atf_check jexec syslogd_allowed_peer ifconfig ${epair}a inet 169.254.0.1/16
-    atf_check jexec syslogd_allowed_peer ifconfig lo0 inet 127.0.0.1/8
     atf_check jexec syslogd_client ifconfig ${epair}b inet 169.254.0.2/16
     atf_check jexec syslogd_client ifconfig ${epair}b alias 169.254.0.3/16
-    atf_check jexec syslogd_client ifconfig lo0 inet 127.0.0.1/8
 }
 
 allowed_peer_test_cleanup()
@@ -529,12 +527,10 @@ forward_body()
     atf_check ifconfig ${epair}a vnet syslogd_server
     atf_check jexec syslogd_server ifconfig ${epair}a inet 169.254.0.1/16
     atf_check jexec syslogd_server ifconfig ${epair}a alias 169.254.0.2/16
-    atf_check jexec syslogd_server ifconfig lo0 inet 127.0.0.1/8
 
     syslogd_mkjail syslogd_client vnet
     atf_check ifconfig ${epair}b vnet syslogd_client
     atf_check jexec syslogd_client ifconfig ${epair}b inet 169.254.0.3/16
-    atf_check jexec syslogd_client ifconfig lo0 inet 127.0.0.1/8
 
     cat <<__EOF__ > ./client_config
 user.debug @169.254.0.1
diff --git a/usr.sbin/syslogd/tests/syslogd_test_common.sh b/usr.sbin/syslogd/tests/syslogd_test_common.sh
index a4aea07f8528..2f21137cf026 100644
--- a/usr.sbin/syslogd/tests/syslogd_test_common.sh
+++ b/usr.sbin/syslogd/tests/syslogd_test_common.sh
@@ -23,9 +23,6 @@ syslogd_start()
     local jail bind_arg conf_file pid_file socket privsocket
     local opt next other_args
 
-    # Setup loopback so we can deliver messages to ourself.
-    atf_check ifconfig lo0 inet 127.0.0.1/16
-
     OPTIND=1
     while getopts ":b:f:j:P:p:S:" opt; do
         case "${opt}" in
@@ -71,6 +68,11 @@ syslogd_start()
         esac
     done
 
+    # Setup loopback so we can deliver messages to ourself.
+    if [ $($jail sysctl -n security.jail.vnet) -ne 0 ]; then
+        atf_check $jail ifconfig lo0 inet 127.0.0.1/8
+    fi
+
     $jail syslogd \
         ${bind_arg:--b :${SYSLOGD_UDP_PORT}} \
         -C \