config: don't forget to enable this config toggle

Fixes: 73720dd ("Restore network configuration on startup")
Change-Id: Id80d09146d1115bac26aa99b4a987fef3a4fa13c
diff --git a/configs/czechlight_clearfog_defconfig b/configs/czechlight_clearfog_defconfig
index 1cb6b04..e894eac 100644
--- a/configs/czechlight_clearfog_defconfig
+++ b/configs/czechlight_clearfog_defconfig
@@ -103,6 +103,7 @@
 CZECHLIGHT_CFG_FS_SIZE="256M"
 CZECHLIGHT_CFG_FS_PERSIST_SYSREPO=y
 CZECHLIGHT_CFG_FS_PERSIST_KEYS=y
+CZECHLIGHT_CFG_FS_PERSIST_NETWORK=y
 BR2_PACKAGE_CZECHLIGHT_CLEARFOG_LEDS=y
 CZECHLIGHT_RAUC_ROOTFS=y
 CZECHLIGHT_RAUC_COMPATIBLE="czechlight-clearfog"