diff --git a/bundles/radvd/files/radvd.conf b/bundles/radvd/files/radvd.conf
index 10b7fc7..156a262 100644
--- a/bundles/radvd/files/radvd.conf
+++ b/bundles/radvd/files/radvd.conf
@@ -14,7 +14,7 @@ interface ${interface}
 % if 'rdnss' in config:
     RDNSS ${' '.join(sorted(config['rdnss']))}
     {
-        AdvRDNSSLifetime 900;
+        AdvRDNSSLifetime 45;
     };
 % endif
 };