dovecot - Oct 2015 - Dualstack IPv4/IPv6 setup with directors

Hi,

still using 2.2.9, I've two directors, and these directors
use both IPv4/IPv6 addresses.

`host directors.<domain>` returns one A and AAA for each
of the two directors:

    directors.<domain> has address 149.x.y.96               (director1)
    directors.<domain> has address 149.x.y.97               (director2)
    directors.<domain> has IPv6 address 2001:x:y:f33::5:1   (director1)
    directors.<domain> has IPv6 address 2001:x:y:f33::5:2   (director2)

But connecting the the neighbor director gives:

Oct 13 21:23:29 director1 dovecot: director: Warning: Director
2001:x:y:f33::5:2:9090/left disconnected us with reason: Invalid input: ME
149.x.y.96 9090
Oct 13 21:23:29 director1 dovecot: director: Error:
director(149.x.y.97:9090/out): connect() failed: Connection refused
Oct 13 21:23:29 director1 dovecot: director: Warning: net_connect_ip():
ip->family != my_ip->family
Oct 13 21:23:29 director1 dovecot: director: Error: Remote director thinks
it's someone else (connected to 2001:x:y:f33::5:1:9090, remote says it's
149.x.y.96:9090)

I assume it's because the director uses only one (IPv4 OR IPv6) address
for it's own identity, right? 

    Best regards from Dresden/Germany
    Viele Gr??e aus Dresden
    Heiko Schlittermann
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On 13 Oct 2015, at 22:31, Heiko Schlittermann <hs at schlittermann.de>
wrote:
> 
> Hi,
> 
> still using 2.2.9, I've two directors, and these directors
> use both IPv4/IPv6 addresses.
> 
> `host directors.<domain>` returns one A and AAA for each
> of the two directors:
> 
>    directors.<domain> has address 149.x.y.96              
(director1)
>    directors.<domain> has address 149.x.y.97              
(director2)
>    directors.<domain> has IPv6 address 2001:x:y:f33::5:1  
(director1)
>    directors.<domain> has IPv6 address 2001:x:y:f33::5:2  
(director2)
> 
> But connecting the the neighbor director gives:
> 
> Oct 13 21:23:29 director1 dovecot: director: Warning: Director
2001:x:y:f33::5:2:9090/left disconnected us with reason: Invalid input: ME
149.x.y.96 9090
> Oct 13 21:23:29 director1 dovecot: director: Error:
director(149.x.y.97:9090/out): connect() failed: Connection refused
> Oct 13 21:23:29 director1 dovecot: director: Warning: net_connect_ip():
ip->family != my_ip->family
> Oct 13 21:23:29 director1 dovecot: director: Error: Remote director thinks
it's someone else (connected to 2001:x:y:f33::5:1:9090, remote says it's
149.x.y.96:9090)
> 
> I assume it's because the director uses only one (IPv4 OR IPv6) address
> for it's own identity, right? 
Right. I thought I did something to fix this crash, but probably not. In any
case it's not a supported configuration even if it didn't crash.

Timo Sirainen <tss at iki.fi> (Di 13 Okt 2015 21:42:41 CEST):
?
> > Oct 13 21:23:29 director1 dovecot: director: Error:
director(149.x.y.97:9090/out): connect() failed: Connection refused
> > Oct 13 21:23:29 director1 dovecot: director: Warning:
net_connect_ip(): ip->family != my_ip->family
> > Oct 13 21:23:29 director1 dovecot: director: Error: Remote director
thinks it's someone else (connected to 2001:x:y:f33::5:1:9090, remote says
it's 149.x.y.96:9090)
> > 
> > I assume it's because the director uses only one (IPv4 OR IPv6)
address
> > for it's own identity, right? 
> 
> Right. I thought I did something to fix this crash, but probably not. In
any case it's not a supported configuration even if it didn't crash.
Ok, maybe it should be mentioned in the Wiki, that having multiple
addresses per directors isn't supported for director-director
communication.

But anyway, thanks for the information, it helps.

-- 
Heiko
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