diff --git a/board/ci20/uboot-env.txt b/board/ci20/uboot-env.txt
index 3093496cc9..2d693af7b7 100644
--- a/board/ci20/uboot-env.txt
+++ b/board/ci20/uboot-env.txt
@@ -1,6 +1,6 @@
 baudrate=115200
 board_mfr=NP
-bootargs=console=ttyS4,115200 console=tty0 mem=256M@0x0 mem=768M@0x30000000 rootwait root=/dev/mmcblk0p1 devtmpfs.mount=1 ip=dhcp
+bootargs=console=ttyS4,115200 console=tty0 mem=256M@0x0 mem=768M@0x30000000 rootwait root=/dev/mmcblk0p1 devtmpfs.mount=1
 bootcmd=run ethargs; ext4load mmc 0:1 0x88000000 /boot/uImage; bootm 0x88000000
 bootdelay=1
 ethargs=env set bootargs ${bootargs}
diff --git a/configs/ci20_defconfig b/configs/ci20_defconfig
index 31019aeae2..4b3c742173 100644
--- a/configs/ci20_defconfig
+++ b/configs/ci20_defconfig
@@ -7,6 +7,7 @@ BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_6_1=y
 
 # system
 BR2_TARGET_GENERIC_GETTY_PORT="ttyS4"
+BR2_SYSTEM_DHCP="eth0"
 BR2_TARGET_ROOTFS_EXT2=y
 BR2_TARGET_ROOTFS_EXT2_4=y
 BR2_ROOTFS_POST_IMAGE_SCRIPT="support/scripts/genimage.sh"