diff --git a/test/fixtures/shared/bin/ifconfig b/test/fixtures/shared/bin/ifconfig
index 59c9140b9d5..c31481a571f 100755
--- a/test/fixtures/shared/bin/ifconfig
+++ b/test/fixtures/shared/bin/ifconfig
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-# Dummy "ifconfig -a" emulator
+# Dummy "ifconfig -a" emulator, from net-tools 1.60, ifconfig 1.42 (2001-04-13)
 
 cat <<EOF
 eth0      Link encap:Ethernet  HWaddr 33:33:33:33:33:33
@@ -21,4 +21,21 @@ lo        Link encap:Local Loopback
           TX packets:129059 errors:0 dropped:0 overruns:0 carrier:0
           collisions:0 txqueuelen:0 
           RX bytes:7456154 (7.1 MiB)  TX bytes:7456154 (7.1 MiB)
+
+peer1     Link encap:Ethernet  HWaddr 33:33:33:33:33:33
+          inet6 addr: fe80::000:0000:0000:0000/64 Scope:Link
+          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
+          RX packets:15 errors:0 dropped:0 overruns:0 frame:0
+          TX packets:15 errors:0 dropped:0 overruns:0 carrier:0
+          collisions:0 txqueuelen:1000
+          RX bytes:1146 (1.1 Kb)  TX bytes:1146 (1.1 Kb)
+
+peer2     Link encap:Ethernet  HWaddr 33:33:33:33:33:33
+          inet6 addr: fe80::000:0000:0000:0000/64 Scope:Link
+          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
+          RX packets:15 errors:0 dropped:0 overruns:0 frame:0
+          TX packets:15 errors:0 dropped:0 overruns:0 carrier:0
+          collisions:0 txqueuelen:1000
+          RX bytes:1146 (1.1 Kb)  TX bytes:1146 (1.1 Kb)
+
 EOF
diff --git a/test/fixtures/shared/bin/ip b/test/fixtures/shared/bin/ip
index 59bdfe823ec..714a0f43038 100755
--- a/test/fixtures/shared/bin/ip
+++ b/test/fixtures/shared/bin/ip
@@ -10,6 +10,10 @@ for arg in "$@"; do
     link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT group default 
     link/ether 33:33:33:33:33:33 brd ff:ff:ff:ff:ff:ff link-netnsid 0
+5: peer2@peer1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT group default qlen 1000
+    link/ether 33:33:33:33:33:33 brd ff:ff:ff:ff:ff:ff
+6: peer1@peer2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT group default qlen 1000
+    link/ether 33:33:33:33:33:33 brd ff:ff:ff:ff:ff:ff
 EOF
             exit 0
             ;;
@@ -27,6 +31,14 @@ EOF
        valid_lft forever preferred_lft forever
     inet6 fe80::000:0000:0000:0000/64 scope link 
        valid_lft forever preferred_lft forever
+5: peer2@peer1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
+    link/ether 33:33:33:33:33:33 brd ff:ff:ff:ff:ff:ff
+    inet6 fe80::000:0000:0000:0000/64 scope link
+       valid_lft forever preferred_lft forever
+6: peer1@peer2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
+    link/ether 33:33:33:33:33:33 brd ff:ff:ff:ff:ff:ff
+    inet6 fe80::000:0000:0000:0000/64 scope link
+       valid_lft forever preferred_lft forever
 EOF
             exit 0
             ;;
diff --git a/test/t/unit/test_unit_compgen_available_interfaces.py b/test/t/unit/test_unit_compgen_available_interfaces.py
index f3ebac01cfb..5e487283d10 100644
--- a/test/t/unit/test_unit_compgen_available_interfaces.py
+++ b/test/t/unit/test_unit_compgen_available_interfaces.py
@@ -1,6 +1,6 @@
 import pytest
 
-from conftest import assert_bash_exec
+from conftest import assert_bash_exec, bash_env_saved
 
 
 @pytest.mark.bashcomp(cmd=None)
@@ -16,10 +16,33 @@ def functions(self, bash):
             '_comp__test_compgen() { local -a arr=(00); _comp_compgen -v arr "$@"; _comp__test_dump; }',
         )
 
-    def test_1_trailing_colons(self, bash, functions):
+    # We fallback to ifconfig if ip fails, so we want to check also the scenario without ip.
+    @pytest.fixture(scope="function", params=["ip", "ifconfig"])
+    def remove_one_tool(self, request, bash):
+        assert_bash_exec(bash, f"{request.param}() {{ false; }}")
+        yield
+        assert_bash_exec(bash, f"unset -f {request.param}")
+
+    def test_1_trailing_colons(self, bash, functions, remove_one_tool):
         output = assert_bash_exec(
             bash,
             "_comp__test_compgen available_interfaces",
             want_output=True,
         )
         assert ":>" not in output.strip()
+
+    def test_2_correct_interfaces(self, bash, functions, remove_one_tool):
+        with bash_env_saved(bash) as bash_env:
+            # Using emulated ip and ifconfig commands
+            bash_env.write_variable(
+                "PATH", "$PWD/shared/bin:$PATH", quote=False
+            )
+            output = assert_bash_exec(
+                bash,
+                "_comp__test_compgen available_interfaces",
+                want_output=True,
+            )
+            assert all(
+                iface in output
+                for iface in ["<eth0>", "<lo>", "<peer1>", "<peer2>"]
+            )