diff --git a/unix/uxnet.c b/unix/uxnet.c
index c0f24719..96d3aa51 100644
--- a/unix/uxnet.c
+++ b/unix/uxnet.c
@@ -326,7 +326,9 @@ void sk_getaddr(SockAddr addr, char *buf, int buflen)
 
 int sk_hostname_is_local(char *name)
 {
-    return !strcmp(name, "localhost");
+    return !strcmp(name, "localhost") ||
+	   !strcmp(name, "::1") ||
+	   !strncmp(name, "127.", 4);
 }
 
 #define ipv4_is_loopback(addr) \
diff --git a/windows/winnet.c b/windows/winnet.c
index 38489163..c549b087 100644
--- a/windows/winnet.c
+++ b/windows/winnet.c
@@ -602,7 +602,9 @@ void sk_getaddr(SockAddr addr, char *buf, int buflen)
 
 int sk_hostname_is_local(char *name)
 {
-    return !strcmp(name, "localhost");
+    return !strcmp(name, "localhost") ||
+	   !strcmp(name, "::1") ||
+	   !strncmp(name, "127.", 4);
 }
 
 static INTERFACE_INFO local_interfaces[16];