Multiple CNAMEs - howto?

[Stephane Bortzmeyer]

On Fri, Oct 27, 2006 at 02:18:15PM +0200,
 Stephane Bortzmeyer <bortzmeyer at nic.fr> wrote 
 a message of 20 lines which said:

> As an illustration, I attached a source m4 file.

It seems someone swallowed it somewhere? Here it is:

dnl Process with "m4 zone.m4" > zone

define(UK1,84.45.66.158)
define(UK2,80.175.28.46)
define(UK3,80.175.29.73)

uk1   A   UK1
uk2   A   UK2
uk3   A   UK3

exchange   IN   A   UK1
exchange   IN   A   UK2
exchange   IN   A   UK3

www IN  A UK2

jabber  IN A UK1
jabber  IN A UK3