diff --git a/config/bridgedomain.py b/config/bridgedomain.py
index 1d84a61..10a12bd 100644
--- a/config/bridgedomain.py
+++ b/config/bridgedomain.py
@@ -26,6 +26,16 @@ def get_bridgedomains(yaml):
     return ret
 
 
+def get_by_lcp_name(yaml, lcpname):
+    """ Returns the bridgedomain by a given lcp name, or None,None if it does not exist """
+    if not 'bridgedomains' in yaml:
+        return None,None
+    for ifname, iface in yaml['bridgedomains'].items():
+        if 'lcp' in iface and iface['lcp'] == lcpname:
+            return ifname, iface
+    return None,None
+
+
 def get_by_name(yaml, ifname):
     """ Return the BridgeDomain by name, if it exists. Return None,None otherwise. """
     try:
diff --git a/config/loopback.py b/config/loopback.py
index 109678c..09341d2 100644
--- a/config/loopback.py
+++ b/config/loopback.py
@@ -24,6 +24,16 @@ def get_loopbacks(yaml):
     return ret
 
 
+def get_by_lcp_name(yaml, lcpname):
+    """ Returns the loopback by a given lcp name, or None,None if it does not exist """
+    if not 'loopbacks' in yaml:
+        return None,None
+    for ifname, iface in yaml['loopbacks'].items():
+        if 'lcp' in iface and iface['lcp'] == lcpname:
+            return ifname, iface
+    return None,None
+
+
 def get_by_name(yaml, ifname):
     """ Return the loopback by name, if it exists. Return None otherwise. """
     try:
diff --git a/config/test_bridgedomain.py b/config/test_bridgedomain.py
index 1486486..885f04e 100644
--- a/config/test_bridgedomain.py
+++ b/config/test_bridgedomain.py
@@ -7,6 +7,15 @@ class TestBridgeDomainMethods(unittest.TestCase):
         with open("unittest/test_bridgedomain.yaml", "r") as f:
             self.cfg = yaml.load(f, Loader = yaml.FullLoader)
 
+    def test_get_by_lcp_name(self):
+        ifname, iface = bridgedomain.get_by_lcp_name(self.cfg, "bvi12")
+        self.assertIsNotNone(iface)
+        self.assertEqual("bd12", ifname)
+
+        ifname, iface = bridgedomain.get_by_lcp_name(self.cfg, "bvi-noexist")
+        self.assertIsNone(iface)
+        self.assertIsNone(ifname)
+
     def test_get_by_name(self):
         ifname, iface = bridgedomain.get_by_name(self.cfg, "bd10")
         self.assertIsNotNone(iface)
diff --git a/config/test_loopback.py b/config/test_loopback.py
index df79e1c..dc8d610 100644
--- a/config/test_loopback.py
+++ b/config/test_loopback.py
@@ -7,6 +7,15 @@ class TestLoopbackMethods(unittest.TestCase):
         with open("unittest/test_loopback.yaml", "r") as f:
             self.cfg = yaml.load(f, Loader = yaml.FullLoader)
 
+    def test_get_by_lcp_name(self):
+        ifname, iface = loopback.get_by_lcp_name(self.cfg, "loop56789012345")
+        self.assertIsNotNone(iface)
+        self.assertEqual("loop1", ifname)
+
+        ifname, iface = loopback.get_by_lcp_name(self.cfg, "lcp-noexist")
+        self.assertIsNone(iface)
+        self.assertIsNone(ifname)
+
     def test_get_by_name(self):
         ifname, iface = loopback.get_by_name(self.cfg, "loop1")
         self.assertIsNotNone(iface)