华为交换机命令行多配置了一个dns地址，怎么删除它

华为S5735S-S24T4S-A
VRP ® software, Version 5.170 (S5735 V200R019C10SPC500)

不小心多配置了一个dns地址，怎么删除它

[LT-Vlanif1]dis th
[LT-Vlanif1]dhcp server dns-list 202.101.172.35 202.101.172.4 202.101.172.47 #多了一个172.4
return
[LT-Vlanif1undo dhcp server dns-list 202.101.172.4 删除这个地址
[LT-Vlanif1]dis th
[LT-Vlanif1]dhcp server dns-list 202.101.172.35 202.101.172.47