Alow matching ipv6 new method 'disable'
NM introduced new method ipv6.method 'disable', the existing ipv6 method check passes for methods 'link-local' and 'auto', this patch allows the check to pass for 'disable' method as well.
NM introduced new method ipv6.method 'disable', the existing ipv6 method check passes for methods 'link-local' and 'auto', this patch allows the check to pass for 'disable' method as well.