[ntp:questions] Re: Using loopback interface as source address for NTP client

mayer at gis.net mayer at gis.net
Fri Dec 10 14:47:36 UTC 2004

Aravind babu wrote:
> Hi David,
>            Thanks for your reply.Why i need loopback as source is " I
have a security appliance(Firewall/VPN) .Suppose if the WAN mode is
dial-up address will be changed dynamically.I want to remain my request
to send from same ip .So i want to use loopback as source so that if
WAN address changes also my request will go from same address."I think
u got my point.

This makes no sense. The loopback address is literally this
machine and this machine only. It is NOT the "Configured IP
address of this machine". A loopback address never goes out on
the wire.

If you want the IP address of the machine at any point use
a script to get it.

> So is there any facility in linux to configure loopback address as
source for NTP client ? I checked the source code of NTP in linux.I am
planning to change the source code.Is there any easy way to accomplish

No, the question makes no sense. See above.


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