Yo Eric! On Fri, 27 Jan 2017 15:01:19 -0500 "Eric S. Raymond" <e...@thyrsus.com> wrote:
> Gary E. Miller <g...@rellim.com>: > > Yes, but NTP does not have to. NTP can just open an IPv6 socket and > > shove all IPv6 and IPv4 in through that socket. Apache does this, > > sendmail does this, nginx does this, postfix does this. Very > > standard and very easy. > > That's interesting. Does this mean we could throw out all > IPV4-specific code and use IPV6 logic everywhere? Yes. > I didn't think an IPv6 accept() would take incoming IPv4 connections Yes. > - is there a way to make it take both? It does by default, if you only open an IPv6 socket. Look at 'man 7 ipv6' Or here: http://man7.org/linux/man-pages/man7/ipv6.7.html "IPv4 connections can be handled with the v6 API by using the v4-mapped-on-v6 address type; thus a program needs to support only this API type to support both protocols. This is handled transparently by the address handling functions in the C library." RGDS GARY --------------------------------------------------------------------------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 Veritas liberabit vos. -- Quid est veritas? "If you can’t measure it, you can’t improve it." - Lord Kelvin
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