diff --git a/test/units/testsuite-19.IPAddressAllow-Deny.sh b/test/units/testsuite-19.IPAddressAllow-Deny.sh
new file mode 100755
index 0000000000..b703940de4
--- /dev/null
+++ b/test/units/testsuite-19.IPAddressAllow-Deny.sh
@@ -0,0 +1,73 @@
+#!/usr/bin/env bash
+# SPDX-License-Identifier: LGPL-2.1-or-later
+set -ex
+set -o pipefail
+
+# shellcheck source=test/units/assert.sh
+. "$(dirname "$0")"/assert.sh
+
+if [[ "$(get_cgroup_hierarchy)" != unified ]]; then
+    echo "Skipping $0 as we're not running with the unified cgroup hierarchy."
+    exit 0
+fi
+
+if systemd-detect-virt --container --quiet; then
+    echo "Skipping $0 as we're running on container."
+    exit 0
+fi
+
+ip netns add test-ns
+ip link add test-veth-1 type veth peer test-veth-2
+ip link set test-veth-2 netns test-ns
+ip link set test-veth-1 up
+ip address add 192.0.2.1/24 dev test-veth-1
+ip address add 2001:db8::1/64 dev test-veth-1 nodad
+ip netns exec test-ns ip link set test-veth-2 up
+ip netns exec test-ns ip address add 192.0.2.2/24 dev test-veth-2
+ip netns exec test-ns ip address add 2001:db8::2/64 dev test-veth-2 nodad
+
+ping_ok_one() {
+    local interface="${1?}"
+    local target="${2?}"
+    shift 2
+
+    assert_true systemd-run --wait --pipe "$@" ping -c 1 -W 1 -I "$interface" "$target"
+}
+
+ping_fail_one() {
+    local interface="${1?}"
+    local target="${2?}"
+    shift 2
+
+    assert_fail systemd-run --wait --pipe "$@" ping -c 1 -W 1 -I "$interface" "$target"
+}
+
+ping_ok() {
+    ping_ok_one lo 127.0.0.1 "$@"
+    ping_ok_one lo ::1 "$@"
+    ping_ok_one test-veth-1 192.0.2.2 "$@"
+    ping_ok_one test-veth-1 2001:db8::2 "$@"
+}
+
+ping_fail() {
+    ping_fail_one lo 127.0.0.1 "$@"
+    ping_fail_one lo ::1 "$@"
+    ping_fail_one test-veth-1 192.0.2.2 "$@"
+    ping_fail_one test-veth-1 2001:db8::2 "$@"
+}
+
+ping_ok
+ping_ok -p IPAddressDeny=any -p IPAddressDeny=
+ping_ok -p IPAddressDeny=any -p IPAddressDeny= -p IPAddressDeny=link-local
+ping_ok -p IPAddressDeny=any -p IPAddressAllow=localhost -p IPAddressAllow=192.0.2.0/24 -p IPAddressAllow=2001:db8::/64
+ping_ok -p IPAddressDeny=any -p IPAddressAllow=localhost -p IPAddressAllow=192.0.2.0/24 -p IPAddressAllow=2001:db8::/64 \
+        -p IPAddressAllow= -p IPAddressAllow=localhost -p IPAddressAllow=192.0.2.0/24 -p IPAddressAllow=2001:db8::/64
+
+ping_fail -p IPAddressDeny=any
+ping_fail -p IPAddressDeny=any -p IPAddressDeny= -p IPAddressDeny=localhost -p IPAddressDeny=192.0.2.0/24 -p IPAddressDeny=2001:db8::/64
+ping_fail -p IPAddressDeny=any -p IPAddressAllow=localhost -p IPAddressAllow=192.0.2.0/24 -p IPAddressAllow=2001:db8::/64 -p IPAddressAllow=
+ping_fail -p IPAddressDeny=any -p IPAddressAllow=localhost -p IPAddressAllow=192.0.2.0/24 -p IPAddressAllow=2001:db8::/64 -p IPAddressAllow= -p IPAddressAllow=link-local
+
+ip link del test-veth-1
+ip netns exec test-ns ip link del test-veth-2 || :
+ip netns del test-ns