fatal: /etc/postfix/master.cf: line 32: valid hostname or network address required in "[fc00::0.0.0.25]:25"
in [Postfix]
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From: Phil Howard on 24 May 2010 09:49 So it looks like the IP address parser used here doesn't accept all valid forms of IPv6? fatal: /etc/postfix/master.cf: line 32: valid hostname or network address required in "[fc00::0.0.0.25]:25" It worked when I used "[fc00::0019]:25".
From: Wietse Venema on 24 May 2010 12:48 Phil Howard: > So it looks like the IP address parser used here doesn't accept all > valid forms of IPv6? > > fatal: /etc/postfix/master.cf: line 32: valid hostname or network > address required in "[fc00::0.0.0.25]:25" 0.0.0.25 is not a valid IPv4 address. Wietse > It worked when I used "[fc00::0019]:25". > >
From: Phil Howard on 25 May 2010 09:16 On Mon, May 24, 2010 at 12:48, Wietse Venema <wietse(a)porcupine.org> wrote: > 0.0.0.25 is not a valid IPv4 address. It is a valid way to express the last 32 bits of any IPv6 address. It only needs to be a valid IPv4 address if the previous 96 bits are "::ffff" (or one other case I don't reacall that I read about). It is used, for example, to map the chosen host-part of the IP address onto network prefixes. For example, when using the last 16 bits as a host part, the IPv4 prefix would be 16 bits while the IPv6 prefix would be 112 bits. But this isn't the first case I have to revert to the pure hex form.
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