Are options 60 and 61 bi-directional?

[/dev/rob0]

On Fri, Jul 25, 2014 at 04:58:11PM -0700, Doug Barton wrote:
> Apologies in advance if this is a silly question, but I can't seem 
> to find an authoritative statement. (Perhaps it's such an obvious 
> issue that no one thought to make one.)
> 
> I always thought that options 60 and 61 were client -> server only. 
> Am I wrong in that belief, or can the server send those options to 
> the client? And if so, what would the client do with it?

See RFC 6842.  This is implemented in ISC's Kea, but not yet in ISC 
DHCP 4.x.  And IIUC it's still somewhat a moving target, because, as 
you might guess, clients do NOT know what to do with it.
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