Inconsistency between postconf(5) and IPV6_README

[Pau Amma]

http://www.postfix.org/postconf.5.html#inet_protocols says:
inet_protocols = all (DEFAULT)
http://www.postfix.org/IPV6_README.html says: inet_protocols = ipv4      
  (DEFAULT: enable IPv4 only)

The inconsistency should be fixed.

[Viktor Dukhovni]

On Thu, Jan 21, 2021 at 04:37:19AM +0000, Pau Amma wrote:

> http://www.postfix.org/postconf.5.html#inet_protocols says:
> inet_protocols = all (DEFAULT)
> http://www.postfix.org/IPV6_README.html says: inet_protocols = ipv4      
>   (DEFAULT: enable IPv4 only)
>
> The inconsistency should be fixed.

Sure, but it may be worth noting that the default is actually
platform and compile-time configuration dependent.

  src/util/sys_defs.h:
    #ifndef DEF_INET_PROTOCOLS
    #ifdef HAS_IPV6
    #define DEF_INET_PROTOCOLS      INET_PROTO_NAME_ALL
    #else
    #define DEF_INET_PROTOCOLS      INET_PROTO_NAME_IPV4
    #endif
    #endif

So it could also be "ipv4" on some system where IPv6 is not
supported, or disabled at compile time via:

    CCARGS='... -DDEF_INET_PROTOCOLS="ipv4" ...'

On most modern systems with no explicit compile-time overrides it will
be "ipv6".

--
    Viktor.