diff --git a/configs/kmcoge5ne_defconfig b/configs/kmcoge5ne_defconfig
index 013277c..6bfcee9 100644
--- a/configs/kmcoge5ne_defconfig
+++ b/configs/kmcoge5ne_defconfig
@@ -159,7 +159,6 @@
 CONFIG_LCRR_EADC_2=y
 CONFIG_LCRR_CLKDIV_4=y
 CONFIG_83XX_PCICLK=0x3ef1480
-CONFIG_KM_DEF_NETDEV="eth1"
 CONFIG_SYS_MONITOR_LEN=786432
 CONFIG_OF_BOARD_SETUP=y
 CONFIG_OF_STDOUT_VIA_ALIAS=y
@@ -197,6 +196,7 @@
 CONFIG_MTDPARTS_DEFAULT="mtdparts=boot:768k(u-boot),128k(env),128k(envred),-(ubi0);app:-(ubi1);"
 CONFIG_CMD_UBI=y
 # CONFIG_CMD_UBIFS is not set
+CONFIG_ENV_SOURCE_FILE="km83xx"
 CONFIG_ENV_OVERWRITE=y
 CONFIG_SYS_REDUNDAND_ENVIRONMENT=y
 CONFIG_ENV_ADDR_REDUND=0xF00E0000
diff --git a/configs/kmeter1_defconfig b/configs/kmeter1_defconfig
index 66ec936..b0af9e0 100644
--- a/configs/kmeter1_defconfig
+++ b/configs/kmeter1_defconfig
@@ -129,7 +129,6 @@
 CONFIG_LCRR_DBYP_PLL_BYPASSED=y
 CONFIG_LCRR_EADC_2=y
 CONFIG_LCRR_CLKDIV_4=y
-CONFIG_KM_DEF_NETDEV="eth2"
 CONFIG_SYS_MONITOR_LEN=786432
 CONFIG_OF_BOARD_SETUP=y
 CONFIG_OF_STDOUT_VIA_ALIAS=y
@@ -166,6 +165,7 @@
 CONFIG_MTDPARTS_DEFAULT="mtdparts=boot:768k(u-boot),128k(env),128k(envred),-(ubi0);"
 CONFIG_CMD_UBI=y
 # CONFIG_CMD_UBIFS is not set
+CONFIG_ENV_SOURCE_FILE="km83xx"
 CONFIG_ENV_OVERWRITE=y
 CONFIG_SYS_REDUNDAND_ENVIRONMENT=y
 CONFIG_ENV_ADDR_REDUND=0xF00E0000
diff --git a/configs/kmopti2_defconfig b/configs/kmopti2_defconfig
index 3ba334c..9a1e7cb 100644
--- a/configs/kmopti2_defconfig
+++ b/configs/kmopti2_defconfig
@@ -178,6 +178,7 @@
 CONFIG_MTDPARTS_DEFAULT="mtdparts=boot:768k(u-boot),128k(env),128k(envred),-(ubi0);"
 CONFIG_CMD_UBI=y
 # CONFIG_CMD_UBIFS is not set
+CONFIG_ENV_SOURCE_FILE="km83xx"
 CONFIG_ENV_OVERWRITE=y
 CONFIG_SYS_REDUNDAND_ENVIRONMENT=y
 CONFIG_ENV_ADDR_REDUND=0xF00E0000
diff --git a/configs/kmsupx5_defconfig b/configs/kmsupx5_defconfig
index 4a02e5e..d981e51 100644
--- a/configs/kmsupx5_defconfig
+++ b/configs/kmsupx5_defconfig
@@ -157,6 +157,7 @@
 CONFIG_MTDPARTS_DEFAULT="mtdparts=boot:768k(u-boot),128k(env),128k(envred),-(ubi0);"
 CONFIG_CMD_UBI=y
 # CONFIG_CMD_UBIFS is not set
+CONFIG_ENV_SOURCE_FILE="km83xx"
 CONFIG_ENV_OVERWRITE=y
 CONFIG_SYS_REDUNDAND_ENVIRONMENT=y
 CONFIG_ENV_ADDR_REDUND=0xF00E0000
diff --git a/configs/kmtepr2_defconfig b/configs/kmtepr2_defconfig
index 5515886..18a464c 100644
--- a/configs/kmtepr2_defconfig
+++ b/configs/kmtepr2_defconfig
@@ -177,6 +177,7 @@
 CONFIG_MTDPARTS_DEFAULT="mtdparts=boot:768k(u-boot),128k(env),128k(envred),-(ubi0);"
 CONFIG_CMD_UBI=y
 # CONFIG_CMD_UBIFS is not set
+CONFIG_ENV_SOURCE_FILE="km83xx"
 CONFIG_ENV_OVERWRITE=y
 CONFIG_SYS_REDUNDAND_ENVIRONMENT=y
 CONFIG_ENV_ADDR_REDUND=0xF00E0000
diff --git a/configs/tuge1_defconfig b/configs/tuge1_defconfig
index 894a79d..dbd832c 100644
--- a/configs/tuge1_defconfig
+++ b/configs/tuge1_defconfig
@@ -157,6 +157,7 @@
 CONFIG_MTDPARTS_DEFAULT="mtdparts=boot:768k(u-boot),128k(env),128k(envred),-(ubi0);"
 CONFIG_CMD_UBI=y
 # CONFIG_CMD_UBIFS is not set
+CONFIG_ENV_SOURCE_FILE="km83xx"
 CONFIG_ENV_OVERWRITE=y
 CONFIG_SYS_REDUNDAND_ENVIRONMENT=y
 CONFIG_ENV_ADDR_REDUND=0xF00E0000
diff --git a/configs/tuxx1_defconfig b/configs/tuxx1_defconfig
index 6e66e6c..1b034a2 100644
--- a/configs/tuxx1_defconfig
+++ b/configs/tuxx1_defconfig
@@ -179,6 +179,7 @@
 CONFIG_MTDPARTS_DEFAULT="mtdparts=boot:768k(u-boot),128k(env),128k(envred),-(ubi0);"
 CONFIG_CMD_UBI=y
 # CONFIG_CMD_UBIFS is not set
+CONFIG_ENV_SOURCE_FILE="km83xx"
 CONFIG_ENV_OVERWRITE=y
 CONFIG_SYS_REDUNDAND_ENVIRONMENT=y
 CONFIG_ENV_ADDR_REDUND=0xF00E0000