[FS#710] Firewall gives warning msgs when kmod-ipt-nat6 is installed

[LEDE Bugs]

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FS#710 - Firewall gives warning msgs when kmod-ipt-nat6 is installed
User who did this: Yousong Zhou (yousong)
Task details edited:
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After I installed kmod-ipt-nat6, firewall gives me these messages on every restart:


 * Populating IPv6 nat table
   * Zone 'lan'
Warning: fw3_ipt_rule_append(): Can't find target 'prerouting_lan_rule'
Warning: fw3_ipt_rule_append(): Can't find target 'postrouting_lan_rule'
   * Zone 'wan'
Warning: fw3_ipt_rule_append(): Can't find target 'prerouting_wan_rule'
Warning: fw3_ipt_rule_append(): Can't find target 'postrouting_wan_rule'
   * Zone 'guest'
Warning: fw3_ipt_rule_append(): Can't find target 'prerouting_guest_rule'
Warning: fw3_ipt_rule_append(): Can't find target 'postrouting_guest_rule'
Warning: fw3_ipt_rule_append(): Can't find target 'prerouting_rule'
Warning: fw3_ipt_rule_append(): Can't find target 'postrouting_rule'


It looks like fw3 is trying to do something with IPv6 NAT and failing. Maybe it should not do it
as NAT6 is just for special cases. I'm using in order to be able to connect to openvpn on the router
from a lan client.
 

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