I've no problem with IPv6 on my server using specific v4 and v6 listen
statements.

Is the IP you're trying to use actually configured on an interface?

Steve.

On 21/06/2018 21:37, abatie wrote:
> I have nginx binding to a variety of addresses for ssl and target selection
> reasons. Now I'm trying to add ipv6 support. Since I'm using specific
> listen addresses, I wouldn't expect to have a binding conflict, however I
> am, and I'm hoping someone can point me in the right direction:
>
> server {
> listen 207.55.17.79:25;
> ...
> server {
> listen [2607:f678::17:79]:25;
> ...
>
> <mailproxy-lb-01.peak.org> [150] # service nginx restart
> Stopping nginx: [FAILED]
> Starting nginx: nginx: [emerg] bind() to [2607:f678::17:79]:25 failed (99:
> Cannot assign requested address)
> [FAILED]
>
> The local mail server is only listening on localhost:
>
> tcp 0 0 ::1:25 :::*
> LISTEN
>
> Commenting out the smtp server config just moves the conflict to the next
> port in question...
>
> nginx/1.7.6
> CentOS release 6.9 (Final)
>
> Posted at Nginx Forum: https://forum.nginx.org/read.php?2,280234,280234#msg-280234
>
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>

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