Adding IPv6 address results in deactivated WIFI

Question

I tried:

auto wls3
iface wls3 inet manual
iface wls3 inet6 auto
iface wls3 inet6 static
  address new_static_ip
  netmask 64
  gateway fe80::1

after a

service network-manager restart

wifi isn't working anymore.

I want dhcp and static IPv6

Answer 1

The only way which worked for me: I added 2 files

for if-up: /etc/network/if-up.d/add-ipv6.sh content:

ip -6 addr add ipv6-address/64 dev wls3

and /etc/network/if-down.d/add-ipv6.sh content:

ip -6 addr del ipv6-address/64 dev wls3