[FS#595] odhcpd in relay mode floods network with NS packets

[LEDE Bugs]

The following task has a new comment added:

FS#595 - odhcpd in relay mode floods network with NS packets
User who did this - netprince (netprince)

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My /etc/config/dhcp file


config dnsmasq 'dns_options'
        option filterwin2k '0'
        option localise_queries '1'
        option rebind_protection '1'
        option rebind_localhost '1'
        option expandhosts '1'
        option nonegcache '0'
        option authoritative '1'
        option readethers '1'
        option leasefile '/tmp/dhcp.leases'
        option resolvfile '/tmp/resolv.conf.auto'
        option domainneeded '0'
        option boguspriv '0'
        option expand_hosts '1'
        option localservice '0'
        option local '/testnet/'
        option domain 'testnet'
        list notinterface 'wan'

config dhcp 'lan'
        option interface 'lan'
        option start '100'
        option limit '150'
        option leasetime '12h'
        option name 'testnet'
        list dhcp_option '15,testnet'
        list dhcp_option '46,1'
        list dhcp_option '47,'
        option ndp 'relay'
        option ra 'relay'

config dhcp 'wan'
        option interface 'wan'
        option ignore '1'

config dhcp 'wan6'
        option interface 'wan'
        option ndp 'relay'
        option ra 'relay'
        option master '1'

config odhcpd 'odhcpd'
        option maindhcp '0'
        option leasefile '/tmp/hosts/odhcpd'
        option leasetrigger '/usr/sbin/odhcpd-update'

config dhcp 'loopback'
        option interface 'loopback'
        option ignore '1'

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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=595#comment2106