The Peplink Balance DHCP server will not accept anything but an IP address when configuring DHCP extended option 17: root-path. This field needs to accept all valid path characters, not IP addresses, as stated in the description for this field and copied below.
Please fix. Thanks.
This option specifies the path of the client’s root disk. The path value is formatted as ASCII text. The length of the value field depends on the number of characters used in the root path specified. For example, if the root path entered has 20 characters, the value field for this option is 20 octets in length.
Peplink Balance 30
Firmware: 5.4.9 build 1732