[FS#1002] Dns ipv6 problem when interface restart

[LEDE Bugs]

The following task has a new comment added:

FS#1002 - Dns ipv6 problem when interface restart
User who did this - Ansuel (Ansuel)

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Ok now i added ip6weight
root at Ansuel-Router:~# uci show network
network.loopback=interface
network.loopback.ifname='lo'
network.loopback.proto='static'
network.loopback.ipaddr='127.0.0.1'
network.loopback.netmask='255.0.0.0'
network.globals=globals
network.globals.ula_prefix='fdcc:f702:84dd::/48'
network.lan=interface
network.lan.type='bridge'
network.lan.proto='static'
network.lan.ipaddr='192.168.2.1'
network.lan.netmask='255.255.255.0'
network.lan.ifname='lan1 lan2 lan3 lan4'
network.lan.ip6assign='64'
network.lan.ip6weight='10'
network.guest=interface
network.guest.type='bridge'
network.guest.proto='static'
network.guest.ipaddr='192.168.20.1'
network.guest.netmask='255.255.255.0'
network.guest.ip6assign='64'
network.guest.ip6weight='0'
network.modem=interface
network.modem.proto='static'
network.modem.ifname='wan'
network.modem.netmask='255.255.255.0'
network.modem.ipaddr='192.168.1.101'
network.wan=interface
network.wan.ifname='wan'
network.wan.proto='pppoe'
network.wan.username='adsl at alice6.it'
network.wan.password='IPV6 at alice6'
network.wan.ipv6='1'
network.wan6=interface
network.wan6.ifname='@wan'
network.wan6.proto='dhcpv6'

lan gets ipv6... guest no ipv6....

(about phone... i have dual stack and it works on pc for example but if i use an android phone i can reach only ipv6 capable site... ipv4 site only doesn't load)
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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=1002#comment3451