[FS#360] Regression: no ipv6 with multiple interface

[LEDE Bugs]

The following task has a new comment added:

FS#360 - Regression: no ipv6 with multiple interface
User who did this - bastien-roucaries (bastien-roucaries)

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Please note the autogenerated dns file is :
# auto-generated config file from /etc/config/dhcp
conf-file=/etc/dnsmasq.conf
dhcp-authoritative
domain-needed
filterwin2k
localise-queries
read-ethers
bogus-priv
expand-hosts
local-service
domain=local.roucaries.eu
server=/local.roucaries.eu/
dhcp-leasefile=/tmp/dhcp.leases
resolv-file=/tmp/resolv.conf.auto
stop-dns-rebind
rebind-localhost-ok
dhcp-broadcast=tag:needs-broadcast
addn-hosts=/tmp/hosts
conf-dir=/tmp/dnsmasq.d
user=dnsmasq
group=dnsmasq

dhcp-host=14:cc:20:0c:58:96,192.168.20.2,[::0:2],router2
dhcp-host=d8:d3:85:d4:63:6c,192.168.200.50,[::0:50],hp_printer
dhcp-host=00:24:8d:f6:ad:8f,192.168.101.10,[::0:10],ps3
dhcp-host=68:a3:78:51:3b:49,192.168.101.50,[::0:50],freeplayer
dhcp-host=28:d2:44:19:61:9c,192.168.20.130,[::0:15],portabletravail-mathilde



dhcp-range=LAN_V1,192.168.1.100,192.168.1.249,255.255.255.0,12h
no-dhcp-interface=eth0
dhcp-range=LAN_V20,192.168.20.100,192.168.20.249,255.255.255.0,12h
dhcp-range=LAN_V200,192.168.200.100,192.168.200.249,255.255.255.0,12h
dhcp-range=LAN_V201,192.168.201.100,192.168.201.249,255.255.255.0,10m
dhcp-range=LAN_V101,192.168.101.100,192.168.101.249,255.255.255.0,1h

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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=360#comment1131