[ntp:questions] ntp client ipv6 support
Rick Jones
rick.jones2 at hp.com
Fri Jun 17 23:44:16 UTC 2011
John Hasler <jhasler at newsguy.com> wrote:
> Rick Jones wrote:
> > Netperf has been passing IPs to getaddrinfo() without setting any
> > special flags.
> Chuck Swiger writes:
> > Maybe there are broken implementations of getaddrinfo() floating
> > around?
> On Linux you must set a flag to tell it not to consider the possibility
> that what you are passing it is not a numeric address:
> node specifies either a numerical network address (for IPv4,
> numbers-and-dots notation as supported by inet_aton(3); for IPv6,
> hexadecimal string format as supported by inet_pton(3)), or a
> network hostname, whose network addresses are looked up and
> resolved. If hints.ai_flags contains the AI_NUMERICHOST flag
> then node must be a numerical network address. The
> AI_NUMERICHOST flag suppresses any potentially lengthy network
> host address lookups.
> CONFORMING TO
> POSIX.1-2001. The getaddrinfo() function is documented in RFC 2553.
I may be parsing your sentence incorrectly, but my reading of the
manpage is that one may set AI_NUMERICHOST, in which case node must be
an IP address, but that is not the same thing as saying that if node
is an IP address that AI_NUMERICHOST must be set.
rick jones
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