diff --git a/package/base-files/files/bin/config_generate b/package/base-files/files/bin/config_generate
index 35299212a3..3f60c5b862 100755
--- a/package/base-files/files/bin/config_generate
+++ b/package/base-files/files/bin/config_generate
@@ -16,7 +16,7 @@ set network.loopback.ipaddr='127.0.0.1'
 set network.loopback.netmask='255.0.0.0'
 delete network.globals
 set network.globals='globals'
-set network.globals.ula_prefix='fdb1:a57f:2544::/48'
+set network.globals.ula_prefix='auto'
 EOF
 }