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Re: force IPv6 dynamic address?

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On 24/3/22 1:11 am, Tim Woodall wrote:
> On Wed, 23 Mar 2022, Jeremy Ardley wrote:
>
>> I have a debian workstation with a static IPv6 address mapped in DNS 
>> as well as dynamic addresses which change with time.
>>
>> The problem I have is that when my thunderbird mail client connects 
>> to gmail it always uses the static IPv6 address as originator and 
>> this shows up in the headers of the delivered mail.
>>
>> How can I make my system and/or thunderbird use the constantly 
>> changing dynamic IPv6 address instead?
>>
>>
>
> I believe it's setting this to 2 that you want (I think there's a
> setting to go in eni to do this too)
>
> https://sysctl-explorer.net/net/ipv6/use_tempaddr/
>
> Tim.
>
My concern is that if I go to 1 or 2 then logging for non email activity 
may suffer.

In the meantime for my non gmail accounts I've modified my mail server thus

cat smtp_header_checks
/^Received:.*with ESMTPSA/  REPLACE Received: <REDACTED>
/^X-Originating-IP:/        IGNORE
/^X-Mailer:/                IGNORE
/^Mime-Version:/            IGNORE
/^User-Agent:/            IGNORE

Which also helps avoid the embarrassment of admitting I use Thunderbird :-)

-- 
Jeremy

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Thread

force IPv6 dynamic address? Jeremy Ardley <jeremy@ardley.org> - 2022-03-22 22:20 +0100
  Re: force IPv6 dynamic address? Georgi Naplatanov <gosho@oles.biz> - 2022-03-23 09:10 +0100
  Re: force IPv6 dynamic address? Andy Smith <andy@strugglers.net> - 2022-03-23 14:30 +0100
  Re: force IPv6 dynamic address? Tim Woodall <debianuser@woodall.me.uk> - 2022-03-23 18:20 +0100
    Re: force IPv6 dynamic address? Tim Woodall <debianuser@woodall.me.uk> - 2022-03-23 18:20 +0100
    Re: force IPv6 dynamic address? Jeremy Ardley <jeremy@ardley.org> - 2022-03-24 10:00 +0100
      Re: force IPv6 dynamic address? Tim Woodall <debianuser@woodall.me.uk> - 2022-03-24 11:00 +0100
        Re: force IPv6 dynamic address? Jeremy Ardley <jeremy@ardley.org> - 2022-03-24 11:20 +0100

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