diff --git a/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/ServerProperties.java b/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/ServerProperties.java
index dc7935ee219..953f0328e71 100644
--- a/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/ServerProperties.java
+++ b/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/ServerProperties.java
@@ -270,7 +270,7 @@ public class ServerProperties {
 		private final Accesslog accesslog = new Accesslog();
 
 		/**
-		 * Regular expression matching trusted IP addresses.
+		 * Regular expression that matches proxies that are to be trusted.
 		 */
 		private String internalProxies = "10\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}|" // 10/8
 				+ "192\\.168\\.\\d{1,3}\\.\\d{1,3}|" // 192.168/16
@@ -278,7 +278,8 @@ public class ServerProperties {
 				+ "127\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}|" // 127/8
 				+ "172\\.1[6-9]{1}\\.\\d{1,3}\\.\\d{1,3}|" // 172.16/12
 				+ "172\\.2[0-9]{1}\\.\\d{1,3}\\.\\d{1,3}|"
-				+ "172\\.3[0-1]{1}\\.\\d{1,3}\\.\\d{1,3}";
+				+ "172\\.3[0-1]{1}\\.\\d{1,3}\\.\\d{1,3}|" //
+				+ "0:0:0:0:0:0:0:1|::1";
 
 		/**
 		 * Header that holds the incoming protocol, usually named "X-Forwarded-Proto".
diff --git a/spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/web/ServerPropertiesTests.java b/spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/web/ServerPropertiesTests.java
index 090c9a3587d..b909677ea38 100644
--- a/spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/web/ServerPropertiesTests.java
+++ b/spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/web/ServerPropertiesTests.java
@@ -37,6 +37,7 @@ import org.apache.catalina.connector.Connector;
 import org.apache.catalina.core.StandardContext;
 import org.apache.catalina.core.StandardEngine;
 import org.apache.catalina.valves.AccessLogValve;
+import org.apache.catalina.valves.RemoteIpValve;
 import org.apache.coyote.AbstractProtocol;
 import org.eclipse.jetty.server.HttpChannel;
 import org.eclipse.jetty.server.Request;
@@ -260,6 +261,12 @@ public class ServerPropertiesTests {
 						.isEqualTo(new AccessLogValve().getRequestAttributesEnabled());
 	}
 
+	@Test
+	public void tomcatInternalProxiesMatchesDefault() {
+		assertThat(this.properties.getTomcat().getInternalProxies())
+				.isEqualTo(new RemoteIpValve().getInternalProxies());
+	}
+
 	@Test
 	public void jettyMaxHttpPostSizeMatchesDefault() throws Exception {
 		JettyServletWebServerFactory jettyFactory = new JettyServletWebServerFactory(0);
diff --git a/spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/web/embedded/TomcatWebServerFactoryCustomizerTests.java b/spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/web/embedded/TomcatWebServerFactoryCustomizerTests.java
index 3f0b835265a..1ddbc689a0c 100644
--- a/spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/web/embedded/TomcatWebServerFactoryCustomizerTests.java
+++ b/spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/web/embedded/TomcatWebServerFactoryCustomizerTests.java
@@ -227,7 +227,8 @@ public class TomcatWebServerFactoryCustomizerTests {
 				+ "127\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}|" // 127/8
 				+ "172\\.1[6-9]{1}\\.\\d{1,3}\\.\\d{1,3}|" // 172.16/12
 				+ "172\\.2[0-9]{1}\\.\\d{1,3}\\.\\d{1,3}|"
-				+ "172\\.3[0-1]{1}\\.\\d{1,3}\\.\\d{1,3}";
+				+ "172\\.3[0-1]{1}\\.\\d{1,3}\\.\\d{1,3}|" //
+				+ "0:0:0:0:0:0:0:1|::1";
 		assertThat(remoteIpValve.getInternalProxies()).isEqualTo(expectedInternalProxies);
 	}