[FS#967] odhcp: does not honor 'ignore' on the dhcp section

[LEDE Bugs]

A new Flyspray task has been opened.  Details are below. 

User who did this - Alexander Couzens (lynxis) 

Attached to Project - LEDE Project
Summary - odhcp: does not honor 'ignore' on the dhcp section
Task Type - Bug Report
Category - Base system
Status - New
Assigned To - 
Operating System - All
Severity - Low
Priority - Medium
Reported Version - lede-17.01
Due in Version - Undecided
Due Date - Undecided
Details - lede-17.01.2

TpLink wdr4300

uci set dhcp.lan.ignore=1

/etc/init.d/dnsmasq reload
/etc/init.d/odhcpd reload

still get an ipv6 address on br-lan

More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=967