[tor-relays] Need advice on IPv6 bridge config

[Steve Snyder]

I want to get an observation on the record: CentOS v6.3 is slow to fully 
init IPv6 networking.

If the IPv6 bridge is started at boot time it may or may not fail to 
initialize.  No problem seen when starting IPv4 bridges at boot time, 
nor is any problem seen when starting a IPv6 bridge after the system has 
booted to a command line prompt.

Inserting a 5-second delay in the Tor script run at boot time "fixes" 
the problem, making boot-time start-up of the IPv6 bridge reliable.

FYI.


On 09/18/2012 08:18 AM, Steve Snyder wrote:
> This seems to work.  The view from Vidalia's Message Log:
>
> [Notice] Learned fingerprint 24432B99CA2533BC95ABF66C7AFE835F96DD2B2D
> for bridge 2a00:1d70:ed15:37:235:53:64:0:443
> [Notice] no known bridge descriptors running yet; stalling
> [Notice] Bridge 'Unnamed' has both an IPv4 and an IPv6 address.  Will
> prefer using its IPv6 address (2a00:1d70:ed15:37:235:53:64:0:443).
> [Notice] new bridge descriptor 'Unnamed' (fresh):
> $24432B99CA2533BC95ABF66C7AFE835F96DD2B2D~Unnamed at aa.bb.cc.dd
> [Notice] We now have enough directory information to build circuits.
> [Notice] Tor has successfully opened a circuit. Looks like client
> functionality is working.
>
> This is a snippet of my Tor config file:
>
> Address [2a00:1d70:ed15:37:235:53:64:0]
> OutboundBindAddress aa.bb.cc.dd
> ORPort [2a00:1d70:ed15:37:235:53:64:0]:443
> ORPort [aa.bb.cc.dd]:443
>
> Note #1: I'm specifying the IPv4 address explicitly because my server
> has 2 network interfaces.
>
> Note #2: I am using the IPv4  address for OutboundBindAddress because
> this config option seems not to understand IPv6 addresses.
>
> Thanks for the advice.
>
>
> On 09/18/2012 07:29 AM, Linus Nordberg wrote:
>> You're right. Brackets are not significant.
>>
>> The 'NoAdvertise' is the other piece of bad advice I've been giving. You
>> will have to remove that flag and really run your bridge on the IPv4
>> address as well as the IPv6 for now. Or filter it off in a local
>> firewall or something like that outside of Tor.
>>
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