On 5/17/2015 6:53 AM, aleph de wrote:
> I'm setting up a home router/firewall.
> 
> It's runnning Shorewall-lite & Shorewall6-lite.
> 
> I have an IPv6 tunnel provided by Hurricane Electric's tunnelbroker.
> 
> I have a VPS with a DNS secondary that needs to communicate to a DNS primary 
> that's on my home DNS primary, over IPv6.
> 
> At the moment, my shorewall logs on the home router are showing this DROP
> 
>       May 17 06:24:57 yoda kernel: [235522.153692] shorewall:net2fw:DROP 
> IN=sit1 OUT=  TUNNEL=H.H.H.H->L.L.L.L SRC=2600:...:1234 DST=2001:...:0100 
> LEN=72 TC=0 HOPLIMIT=60 FLOWLBL=0 PROTO=TCP SPT=44927 DPT=53 WINDOW=28800 
> RES=0x00 SYN URGP=0 MARK=0x100 
> 
> Where
> 
>       H.H.H.H is the IPv6 tunnel's IPv4 endpoint @ Hurricane Electric
>       L.L.L.L is the IPv6 tunnel's IPv4 endpoint @ my office, i.e. my static 
> IPv4
>       2600:...:1234 is IPv6 address of the DNS 2ndary  server @ the VPS
>       2001:...:0100 is IPv6 address of the DNS primary server @ the office
> 
> I don't understand the interfaces involved in that DROP 
> 
>       ... IN=sit1 OUT=  TUNNEL=H.H.H.H->L.L.L.L SRC=2600:...:1234 
> DST=2001:...:0100 ...
> 
> What specific IPv6 Shorewall rule do I need to create to allow this traffic?

Looks to me as though you neglected to configure an IPv4 rule for the
tunneled traffic. I do that through use of the tunnels file:

#TYPE                   ZONE    GATEWAY         GATEWAY
#                                               ZONE
6to4                    net     216.218.226.238

Where 216.218.226.238 is the IPv4 endpoint at HE.

-Tom
-- 
Tom Eastep        \ When I die, I want to go like my Grandfather who
Shoreline,         \ died peacefully in his sleep. Not screaming like
Washington, USA     \ all of the passengers in his car
http://shorewall.net \________________________________________________

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