Re: [v6ops] PI [ULA draft revision #2 Regarding isolated networks]

[Mark Andrews <[e-mail]>]

In message <[e-mail]>, Nick Hilliard writes:
> On 23/06/2014 16:29, Ted Lemon wrote:
> > It's certainly possible, but you will never see an IPv4 host do it
> > automatically.  It has to be configured manually, and rarely makes much
> > sense other than for servers that simply need an additional public
> > identifier, or routers that need to do network address translation and
> > hence need an IP address on both the public and private subnets.
> 
> ...or any of the situations where it might make sense in the same way that
> it might make sense for ipv6, which is why all major operating systems have
> GUI access to make it easy to add secondary ipv4 addresses on any
> interface.  Secondary ipv4 addresses are completely mainstream, even if we
> all used them before they were cool.

Yet there is equipment on sale as I write that doesn't support them.  It is
not a feature you can depend upon being present in *all* the equipment
connected to the network.

> Nick
> 
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Mark Andrews, ISC
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