diff --git a/release/tools/gce.conf b/release/tools/gce.conf
index 4f8ca7f0d7a4..c8af6507b5d7 100644
--- a/release/tools/gce.conf
+++ b/release/tools/gce.conf
@@ -21,7 +21,7 @@ vm_extra_install_base() {
 vm_extra_pre_umount() {
 	cat << EOF >> ${DESTDIR}/etc/rc.conf
 dumpdev="AUTO"
-ifconfig_vtnet0="SYNCDHCP mtu 1460"
+ifconfig_DEFAULT="SYNCDHCP mtu 1460"
 ntpd_sync_on_start="YES"
 case \$(uname -r) in
 	*-BETA*|*-RC*|*-RELEASE*)