[pkg-ntp-maintainers] Bug#380391: ntp insists on listening to every virtual interface

[dean gaudet]

Package: ntp
Version: 1:4.2.2+dfsg-1

in 4.2.0* if you specified -L you could stop ntp from listening on virtual 
interfaces.

sometime since then the upstream has added "-L interface" to specify the 
interface... but ntpd still insists on listening on every interface it 
finds!

check out this reasoning from ntpd/ntp_io.c:

                /*
                 * Check to see if we are going to use the interface
                 * If we don't use it we mark it to drop any packet
                 * received but we still must create the socket and
                 * bind to it. This prevents other apps binding to it
                 * and potentially causing problems with more than one
                 * process fiddling with the clock
                 */

honestly i don't think listening on a socket is going to stop a determined 
*root* app from "fiddling with the clock".

i consider this a regression against 4.2.0* versions ... not sure what you 
think.  i perused a couple of the upstream bugs and they make it seem like 
it's rocket science to listen only on specified addresses.  weird.

-dean