- "add_net=setenv bootargs $(bootargs) ethaddr=$(ethaddr) " \
- "ip=$(ipaddr):$(serverip):$(gatewayip):$(netmask):$(hostname)::off\0" \
- "add_misc=setenv bootargs $(bootargs) console=ttyS0 panic=1\0" \
+ "add_net=setenv bootargs ${bootargs} ethaddr=${ethaddr} " \
+ "ip=${ipaddr}:${serverip}:${gatewayip}:${netmask}:${hostname}::off\0" \
+ "add_misc=setenv bootargs ${bootargs} console=ttyS0 panic=1\0" \