| Re: [chrony-users] Chrony forgets servers (specified by FQDN) when no DNS server |
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William G. Unruh __| Canadian Institute for|____ Tel: +1(604)822-3273
Physics&Astronomy _|___ Advanced Research _|____ Fax: +1(604)822-5324
UBC, Vancouver,BC _|_ Program in Cosmology |____ unruh@xxxxxxxxxxxxxx
Canada V6T 1Z1 ____|____ and Gravity ______|_ www.theory.physics.ubc.ca/
On Wed, 20 Dec 2017, Stephen Satchell wrote:
On 12/20/2017 09:01 AM, Bill Unruh wrote:
No idea if it will work, but you could put the IP address in instead of
names
for your servers-- that way no dns is needed.
Found the URL:
http://support.ntp.org/bin/view/Servers/StratumTwoTimeServers
In that list of servers, there is a field for each NTP time provider, "Use
DNS". Many of the public servers in this table require that DNS be used with
their service. Here is one entry from the table:
There is absolutely no way they would know if you are using dns or not. All
communication with the server is via IP, and whether that is static IP or dns
is unknown. The primary reason they say that is that they reserve the right to
change the IP address of their server and if you are using a static address,
there is no way you will know, except that it will not work anymore.
ServerStratum StratumTwo
CountryCode US NV
Hostname time2.nv.skyfiberinternet.com
IP Address 162.210.111.4
IPv6 Address
UseDNS Yes
PoolMember No
ServerLocation Reno, Nevada, USA
A spot check shows that the owners of the servers want you to use DNS. Their
server, their rules.
It is not a rule, and is not something they could know whether you are abiding
by it or not.
Remember that if they change the IP of the server, it can take up to 3 days
for that change to propagate through the set of DNS servers, so again they
cannot enforce their "rule" (which is not a rule anyway)
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