diff --git a/doc/configuration.md b/doc/configuration.md
index ac851f8e..2626993b 100644
--- a/doc/configuration.md
+++ b/doc/configuration.md
@@ -17,6 +17,12 @@ Default: no interfaces are blocked.
 This property can be used to specify a ";"-separated list of interfaces which are
 not allowed to be used for candidate allocations. 
 
+### ```org.ice4j.ice.harvest.USE_LOOPBACK_INTERFACES```
+Default: false
+
+Use (NAT-ed) loopback interfaces for ICE candidate selection.
+FreeBSD jails often require this when NAT-ed on the internal lo0 interface with an IPv4 address.
+
 ### ```org.ice4j.ice.harvest.ALLOWED_ADDRESSES```
 Default: all addresses are allowed.
 
diff --git a/src/main/java/org/ice4j/ice/harvest/AbstractTcpListener.java b/src/main/java/org/ice4j/ice/harvest/AbstractTcpListener.java
index a6bd2832..0068bee2 100644
--- a/src/main/java/org/ice4j/ice/harvest/AbstractTcpListener.java
+++ b/src/main/java/org/ice4j/ice/harvest/AbstractTcpListener.java
@@ -81,8 +81,9 @@ private static List<TransportAddress> getLocalAddresses(
 
         for (NetworkInterface iface : interfaces)
         {
-            if (NetworkUtils.isInterfaceLoopback(iface)
-                    || !NetworkUtils.isInterfaceUp(iface)
+            if (NetworkUtils.isInterfaceLoopback(iface) && !config.useLoopbackInterfaces())
+                continue;
+            if (!NetworkUtils.isInterfaceUp(iface)
                     || !HostCandidateHarvester.isInterfaceAllowed(iface))
             {
                 //this one is obviously not going to do
diff --git a/src/main/java/org/ice4j/ice/harvest/HostCandidateHarvester.java b/src/main/java/org/ice4j/ice/harvest/HostCandidateHarvester.java
index b9d5ab07..517374f2 100644
--- a/src/main/java/org/ice4j/ice/harvest/HostCandidateHarvester.java
+++ b/src/main/java/org/ice4j/ice/harvest/HostCandidateHarvester.java
@@ -236,9 +236,9 @@ public static List<InetAddress> getAllAllowedAddresses()
             for (NetworkInterface iface
                     : Collections.list(NetworkInterface.getNetworkInterfaces()))
             {
-                if (NetworkUtils.isInterfaceLoopback(iface)
-                        || !NetworkUtils.isInterfaceUp(iface)
-                        || !isInterfaceAllowed(iface))
+                if (NetworkUtils.isInterfaceLoopback(iface) && !config.useLoopbackInterfaces())
+                    continue;
+                if (!NetworkUtils.isInterfaceUp(iface) || !isInterfaceAllowed(iface))
                 {
                     continue;
                 }
@@ -316,9 +316,9 @@ public void harvest(Component component,
         {
             NetworkInterface iface = interfaces.nextElement();
 
-            if (NetworkUtils.isInterfaceLoopback(iface)
-                || !NetworkUtils.isInterfaceUp(iface)
-                || !isInterfaceAllowed(iface))
+            if (NetworkUtils.isInterfaceLoopback(iface) && !config.useLoopbackInterfaces())
+                continue;
+            if (!NetworkUtils.isInterfaceUp(iface) || !isInterfaceAllowed(iface))
             {
                 //this one is obviously not going to do
                 continue;
@@ -497,7 +497,7 @@ static boolean isInterfaceAllowed(NetworkInterface iface)
      */
     static boolean isAddressAllowed(InetAddress address)
     {
-        if (address.isLoopbackAddress())
+        if (address.isLoopbackAddress() && !config.useLoopbackInterfaces())
         {
             return false;
         }
diff --git a/src/main/kotlin/org/ice4j/ice/harvest/HarvestConfig.kt b/src/main/kotlin/org/ice4j/ice/harvest/HarvestConfig.kt
index 2afc7d0a..4a84e268 100644
--- a/src/main/kotlin/org/ice4j/ice/harvest/HarvestConfig.kt
+++ b/src/main/kotlin/org/ice4j/ice/harvest/HarvestConfig.kt
@@ -44,6 +44,13 @@ class HarvestConfig {
     }
     fun useIpv6() = useIpv6
 
+    private val useLoopbackInterfaces: Boolean by config {
+        "org.ice4j.ice.harvest.USE_LOOPBACK_INTERFACES".from(configSource)
+            .transformedBy { !it }
+        "ice4j.harvest.use-loopback-interfaces".from(configSource)
+    }
+    fun useLoopbackInterfaces() = useLoopbackInterfaces
+
     val useDynamicPorts: Boolean by config {
         "org.ice4j.ice.harvest.USE_DYNAMIC_HOST_HARVESTER".from(configSource)
         "ice4j.harvest.udp.use-dynamic-ports".from(configSource)
diff --git a/src/main/resources/reference.conf b/src/main/resources/reference.conf
index 58892d65..9be436b2 100644
--- a/src/main/resources/reference.conf
+++ b/src/main/resources/reference.conf
@@ -25,6 +25,10 @@ ice4j {
 
   // Configuration related to harvesting (aka gathering) of local candidates.
   harvest {
+    // Use loopback (NAT-ed) interfaces for ICE candidate selection.
+    // FreeBSD jails often require this when NAT-ed on the internal lo0 interface with an IPv4 address.
+    use-loopback-interfaces = false
+
     // Whether to harvest IPv6 addresses.
     use-ipv6 = true
     // Whether to use link-local addresses when harvesting candidates.