ave yourself trouble by doing so?
If not, you should probably reconsider.
[...]
Don't be distracted by RFC2317. It describes the trickery you need
when you're dealing with a longer prefix (fewer addresses) than a
/24. If you have "a few /24", you can deal with them withou
es it periodically send any messages to the server. What Kind of messages
are required by the client to be sent towards server to determine if the
DNS IP is reachable or not?
what is your problem?
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ar.example too...
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Depression is merely anger with
Am 22.10.2015 um 14:01 schrieb Matus UHLAR - fantomas:
I wonder if it's not enough to verify that the first response was received
from proper server.
Since play.l.google.com is a subdomain of play.google.com, the lookup would
go throuth google.com nameservers again...
when server
On 26.12.15 20:30, kev wrote:
I am using bind9 with ubuntu 14.04. I was wondering how to log by
indivudual IP. Ive googled it but didnt find what i was looking
for.Thanks,
I'd choose logging at kernel level in iptables firewall.
ULOG and ulogd can log to libpcap format.
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On 26.12.15 20:30, kev wrote:
I am using bind9 with ubuntu 14.04. I was wondering how to log by
indivudual IP. Ive googled it but didnt find what i was looking
for.Thanks,
Am 27.12.2015 um 18:07 schrieb Matus UHLAR - fantomas:
I'd choose logging at kernel level in iptables firewall.
On 26.12.15 20:30, kev wrote:
I am using bind9 with ubuntu 14.04. I was wondering how to log by
indivudual IP. Ive googled it but didnt find what i was looking
for.Thanks,
Am 27.12.2015 um 18:07 schrieb Matus UHLAR - fantomas:
I'd choose logging at kernel level in iptables firewall.
Hello,
On 26.12.15 20:30, kev wrote:
I am using bind9 with ubuntu 14.04. I was wondering how to log by
indivudual IP. Ive googled it but didnt find what i was looking
for.Thanks,
On 27.12.15 18:07, Matus UHLAR - fantomas wrote:
I'd choose logging at kernel level in iptables firewall.
so, instead of providing type "ANY" you want people to flood your server
with multiple queries for type?
if you have problems, response rate limiting should be better solution.
...I received spam from comnpany with NS hosted at cloudflare that refuses ANY
query. I am considering ignoring such
uot;cts.org" in file "192.168.99.zone" that
contains the reverse zone, not zone cts.org.
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"Unassociated
entries" when the problem happens.
anything more isble in the cache?
last time I have encountered this error, it was problematic Cisco DNS load
balancer, responding NXDOMAIN to a PTR (and possibly other) type queries,
while standard types returned proper answer.
--
M
now..
doesn't the log also contain info where did that message come from?
Our current work around is to restart named (which cache) or we could do a
'rndc flush'.
"rndc flushname myname.mydomain.com" should be enough - not needed to flush
whole cache.
--
M
effect it would disable negative
cacheing.
which means, DON'T DO THAT. anyone searching for nonexisting DNS names (e.g.
because of a misconfiguration) could easily DoS your server.
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yahoo, aol, without any valid
reason.
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The early bird may get the worm, but the second mous
el, saying nameserver not authorized.
contact your registrar about this issue.
thisa is not a bind problem.
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e view where clients belong and forward everything...
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LSD will make your ECS screen display
cursion no ), i found
forwarding required recursion. You must turn recursion on (and allos it for
your IPs) to do the forwarding.
Note that in most cases it's useless to do forwarding if your bind server
has connectivity and can do the lookups itself.
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ey "xcat_key";
};
notify yes;
also-notify {10.20.0.100; 10.20.0.101;};
};
apparently the client who asks for update does not know the "xcat_key".
...many windows machines tend to register their name in DNS (it's
on by default in netowr
.121#53(dns1.colostate.edu) in 36 ms
often a problem of invalid NS delegation, or bad TTL (A record for a server
expires before NS record).
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a.colostate.edu.
>dpc.cira.colostate.edu. 3600IN A 129.82.109.62
>;; Received 83 bytes from 129.82.103.121#53(dns1.colostate.edu) in 36 ms
In article ,
Matus UHLAR - fantomas wrote:
often a problem of invalid NS delegation, or bad TTL (A record for a server
expires before NS record)
ea how will ordinary DNS in ipv6 look like, but I doubt it will
look like this...
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Despite the
S protocol just to provide generic DNS
records for each leaf (home) network...
yes, we need something new for IPv6. But not for creating bulks of useless
generic records.
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In article ,
Matus UHLAR - fantomas wrote:
often a problem of invalid NS delegation, or bad TTL (A record for a server
expires before NS record).
On 19.05.16 15:31, Sam Wilson wrote:
Glue A records for the nameservers have 172800 TTL, authoritative A
records have 1200.
that'
.com.
amlinuxmedia.com. 86400 IN NS ns2.host-for.com.
got it?
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One OS to rule
ot an issue) and didn't want to do the work
of changing some standard zone lists and data we use.
what kind of zones are they? why do you load them if you don't want to use
them?
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ome information that I want to
include"
1. there's no point in adding TXT rrs to additional section, they do not
belong there
2. why at all do you want to put them there?
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instead of test1.com for examples...
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I drive way too fast t
means, 194.126.10.18 does not know
the "domainname"
you must add localhost to resolv.conf as first nameserver to get answers
from it by default.
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Var
packet?
Is there other way I can send this extra info through the bind dns query
packet?
it's highly dependent on what exactly you want to achieve.
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V
On 15.07.16 12:05, Daniel Dawalibi wrote:
To: 'Matus UHLAR - fantomas' , bind-users@lists.isc.org
please avoid personal replies. use list-reply whenever possible.
I already did it as per below output of resolv.conf but problem persists.
do you want to say, even if you run "
ed
Dig domainame localhost -> Resolving properly
and, please remove the parts that are not important, don't sent useless crap
to mailing list.
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On 15.07.16 14:05, Daniel Dawalibi wrote:
Dig domainname -> Server failed
On Jul 15, 2016, at 8:48 AM, Matus UHLAR - fantomas wrote:
please show us output of it.
when 127.0.0.1 is first in /etc/resolv.conf, dig should contact localhost
first, and the result should be the same as
for your bind instance - any other
nameserver can change the order.
why don't you use higher order if you want to have them in order?
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05 now...
Because I didn't setup another A name for franklin? Thanks and sorry
for all the questions. I know these probably aren't really bind related
questions anymore. Thanks!
once more: jetbbs.com IS NOT franklin.jetbbs.com !
FYI currently they both only contain 104.238.117.105
gain but when we get into the new house, I'll change it so
the IP address for the second A record points to my server at the house.
That way, if one server goes down, people can still connect. It'd be a
great opportunity to learn this stuff a bit more I think.
good idea.
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ally edited the
httpd.conf file and regenerated the SSL certs, things might have started
working.
this is your problem. don't generate ssl keys when adding IPs.
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My Idea is to run a dynamic update (nsupdate) wrapper script to update TTL
entries for desired resource-records on our slave. Is there a better way
to achieve this?
your slave will only forward the update to master.
Your description does not make sense, what exactly do you want to achieve?
DNS master?
since all resource records have their own TTL, you can simply give those
you want lover TTL than the others.
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or it and the traffic has already
hit your system before ANY queries would be denied.
however, if no responses will come from his server, it's more likely that
the queries will stop.
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On 27 July 2016 at 15:10, Matus UHLAR - fantomas wrote:
however, if no responses will come from his server, it's more likely that
the queries will stop.
On 27.07.16 15:19, S Carr wrote:
If you look at the capture there doesn't appear to be any responses
being sent for the ANY
complain and tell them they should tell you
when tthey migrated their zones off.
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(R)etry, (A
On 2016-07-29 08:21, Matus UHLAR - fantomas wrote:
On 28.07.16 12:13, Paul A wrote:
Now what is everyone using to make sure the zones in named.conf
are still
pointing to your NS servers? I have a lot of stale DNS zones I want to
remove.
separate authoritative and recursive servers.
bill for
On Sat, 2016-07-30 at 21:40 +0200, Matus UHLAR - fantomas wrote:
or simply wait till customers complain and tell them they should tell
you when tthey migrated their zones off.
On 31.07.16 18:00, Carl Byington wrote:
Which customers will complain?
funny that you have answered below
n't happen often that someone migrates
domain off your server.
However you can avoid this issue by running either multiple dns servers,
bind instances or views, recursive-only on 127.0.0.1 and authoritative on
public IP.
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Warning
ameserver instances
(e.g. IPSEC tunnels).
On 24.08.16 08:00, Mark Andrews wrote:
named only accepts IXFR over TCP. While the protocol supports sending
deltas with IXFR/UDP named does not use that part of the protocol.
just IXFRs or AXFRs too?
Isn't edns over UDP enough in many
On 26.08.16 07:34, Tom Tom wrote:
I'm searching a way to respond to IPv6-PTR-Queries like the
"$GENERATE"-mechanism for IPv4 has done it.
why? configuring single IP addresses or taking them from DHCP is easier than
creating new useless mechanism.
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On 26.08.16 07:34, Tom Tom wrote:
I'm searching a way to respond to IPv6-PTR-Queries like the
"$GENERATE"-mechanism for IPv4 has done it.
On 26 August 2016 at 13:45, Matus UHLAR - fantomas
wrote:
why? configuring single IP addresses or taking them from DHCP is easier
th
{
match clients - external {
zone example.org {
};
zone example.com {
};
};
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means?
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Fighting for peace is like fucking for virginity
forwarders) for some time?
BIND should cache frequently used data and provide them quickly.
when you use google forwarder, the main difference is that most of those
data are probably already cached.
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main difference is that most of those
data are probably already cached.
How can I replicate same thing?
just leave bind running for some time.
with 9.10, leave prefetch on and see...
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with 9.10, leave prefetch on and see...
On 20.09.16 15:12, Pol Hallen wrote:
I've 9.9.5 version on debian stable :-/
so simply leave BIND running and see if it's better tomorrow...
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u have problems with forwarding zones or master zones?
Did you run named-checkconf as Benny advised?
Did you run named-checkzone for the newly added zones?
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Varov
{any;} in BIND config and the above is local on the
host (obtained via slaving). The listen-on is set to 'any' on port-53
What am I missing? Why this odd behavior?
a firewall probably?
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commented:
// forwarders {
// 8.8.8.8; 8.8.4.4;
//}
but testing 127.0.0.1, bind keep also 4000/5000ms to resolve a query
forwarders {
127.0.0.1;
}
do you forward to yourself???
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On 21.09.16 14:49, philippe.simo...@swisscom.com wrote:
and after a forward add a rndc flush can help too ..
not needed unless old forwarders provide invalid data.
-Original Message-
From: bind-users [mailto:bind-users-boun...@lists.isc.org] On Behalf Of Matus
UHLAR - fantomas
Sent
mal responses often results into additional queries needed, by
definition. If you want to avoid additional queries, turn minimal_responses
off.
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mains when issued. You can use it if needed.
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How does ca
n: failure
1.168.192.in-addr.arpa is on primary zone, if I add second zone I've
this error
you apparently have 1.168.192.in-addr.arpa defined two times
what are you trying to do?
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query.
If you turn mimimal-responses on, the required data may not be in the
answer. That will result into another query send, which means number of
queries increases.
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erent networks with the same IP addresses and you
want to answer them from different zones, you can use two different views.
Note that the requests must either come from different clients or with
different TSIG keys, otherwise you can't know which view to provide.
--
Matus UHLAR - fa
han having
outdated hints file.
But if someone does care about hints file, it's better to have current
version, when the builtin one is older.
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Varovanie:
nis.net/IN: bad zone
What is the problem here?
is there something you don't understand on error message?
"NS record '72.31.4.5.' appears to be an address"
IP Address can only appear at right side of A record ( for ipv6
addresses). NS records needs domain names
vice (typically "service named
restart" on EL6 and "service named-chroot restart" on EL7) works.
apparently there's something like that (copying files) in startup scripts or
related to puppet installation.
tried running without chroot for a while, if it helps?
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can't correctly emit the right EHLO for outbound email
should remain in the 1990s.
I found it problematic, not helpful.
It's much safer and easier to have one PTR record with correct fcrdns when
sending mail than having multiple DNS records (even with valid fcrdns).
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Matus UHLAR - fa
in the dig output since other queries do not show TCP mode
in their output?
responses that are over 512 bytes (maximum packet size without EDNS) must be
truncated in UDP mode and thus must be responded in TCP mode.
try running:
dig +bufsize=4096 outlook.live.com.
that shoud avoid TCP...
p and
we have port opened slave to master with public ip.
Do we have any option checking for SOA value directly with public ip of
master instead of unicast ip.
I don't get it. What do you mean by "unicast" and "public" IP?
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Matus UHLAR - fantomas, uh...@fantomas.sk ; h
dns update for the RPZ
zone).
On 14/10/16 11:48, Job wrote:
is there a way to update/change this section without reloading or
with a very-soft reload?
Yes. Use "rndc reconfig" instead of "rndc reload".
Regards,
Anand
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96/28
97 IN CNAME 97/28
...
111 IN CNAME 111/28
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If Barbie
o you, better slave them
and send notifies... that will give you better performance and faster
propagation of changes.
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ntract with...
shorter path should make better results and forwarding makes the path longer...
if you are going the multi-AD way, simply forward from requests from AD to a
few BIND caching servers (slaving your internal zones) that will have access
to outside.
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penssl
make
make install
just a side note: it's quite funny that some people set system that has
10-years support and start installing things they won't get support for...
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d only
dns server or will there be any problems related caching etc with this conf.
no, the good configuration is if you do the recursion yourself, without
forwarding to google.
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d only
dns server or will there be any problems related caching etc with this
conf.
On Thu, Nov 24, 2016 at 3:06 PM, Matus UHLAR - fantomas
wrote:
no, the good configuration is if you do the recursion yourself, without
forwarding to google.
On 24.11.16 17:10, Sachin Patil wrote:
I need to
r dns servers as
forwarders - without any real need.
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Quantum mechanics: The dreams stuff is
dig +trace any phdcomics.com
that should help more than comparing to other nameservers if they can query
that domain.
Note that the domain has mismatched delegation, according to some DNS
checkers. also, the servers have very short TTLs.
--
Matus UHLAR - fantomas, uh...@fantomas.sk ;
/2017 10:06 AM, Matus UHLAR - fantomas wrote:
try:
dig +trace any phdcomics.com
On 13.01.17 10:26, Clément Fevrier wrote:
here the result:
% dig +trace any phdcomics.com
phdcomics.com. 172800 IN NS ns2.speakeasy.net.
phdcomics.com. 172800 IN NS
3600 IN PTR network.archaxis.net.
81 3600 IN PTR alpha.archaxis.net.
82 3600 IN PTR bravo.archaxis.net.
87 3600 IN PTR broadcast.archaxis.net.
What is wrong? Is this my problem, or with AT&T?
--
Matus UHLAR - fantomas, uh
servers that
don't answer EDNS + DNS COOKIE queries. Currently we fall back to
plain DNS which works except when there is a signed zone involved
and the server is validating.
fall back for how long? maybe for the same random time as RTT measurements
are done - remember for a while, but retry
s purpose.
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I feel like I'm diagonally park
at to avoid this.
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Fucking windows! Bring Bill Gates! (Southpark the
or root zone. did you check on more of them?
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Windows foun
like 192.168.0.1, that is only reachable from the LAN
this can be done using small resolver in the LAN that resolves the name to
internal IP. Should be no problem unless your end-resolvers check DNSSEC
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ers are non-recursive. They use the same DNS
resolvers that any other server uses, and not themselves.
this configuration will make your recursive servers provide correct data
when your customers move their domains out without telling you so (which
happend quite often)...
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t re-sorted IPs) so I disabled it.
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Saving Private Ryan...
Private Ryan exists.
fine.
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Support bacteria - they're the only culture some people
;-)
there are cases when having two reverse records is misleading.
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Spam = (S)tupid (P)eople
On 18.06.17 16:26, Mark Elkins wrote:
Put two reverse records in both the IPv4 and IPv6 reverse zones
in the "125.124.123.in-addr.arpa" zone:
126 IN PTR mail.xxx.com.
126 IN PTR ns.xxx.com.
Am 18.06.2017 um 17:38 schrieb Matus UHLAR - fantomas:
there are cases w
il.xxx.com, the
reverse address will not point on ns.xxx.com, and if put ns.xxx.com, the
reverse dns will not point on mail.xxx.com, and I shall have mail problem.
you will not have problem. who told you that?
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Matus UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/
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On 06/19/2017 08:51 AM, Matus UHLAR - fantomas wrote:
long story short:
in the "125.124.123.in-addr.arpa" zone:
126 IN PTR mail.xxx.com.
quoting your original message:
What should I put for IPV4 reverse address : if I put mail.xxx.com, the
reverse address will not point on
apparently yes, because this thread exists.
There's OP confused about a problem that does not exists.
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Matus UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/
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rrect.
* smtp_helo_name of your MTA matches the same name
this one is incorrect and my next comment applies only to this one:
Am 19.06.2017 um 08:49 schrieb Matus UHLAR - fantomas:
Even this is not required. In fact, requiring this breaks SMTP RFC.
The only requirement on helo name is that host must exist a
one PTR of this format would cause rejections.
in all of these cases just remove the old useless generic PTR would
have solved the problem from the start
so please inform yourself and do tests.
go reread the OP's question. He asked about "ns" and "mail" records.
t
Am 19.06.2017 um 15:25 schrieb Matus UHLAR - fantomas:
those rejections were NOT caused by having two different PTRs.
They were caused by something different that is not a subject of this
thread - even one PTR of this format would cause rejections.
On 19.06.17 15:32, Reindl Harald wrote:
not
Am 19.06.2017 um 16:56 schrieb Matus UHLAR - fantomas:
since DNS don't care about the PTR but mail does what is your
problem that you need stupid dicussions instead just agree that
it can't do harm and in doubt is beneficial to have just one
hostname, use that one hostname in hel
one data, and I
do understand that prevents you from helping.
I was hoping someone else had come across this at some point.
note that existande of "something.sample" subdomain also means that
"sample" exists and is empty.
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Matus UHLAR - fantomas, uh...@fantomas.sk ; http
mirl.cloudfront.net - maybe you should look up that one
next time problem appears.
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Matus UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/
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I intend to li
he path, so
the 3ms can only be achieved on short distances.
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Matus UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/
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The only substitute for good
rvers in your owndomain (and thus glue
recods in parent zone), search for nameservers that do have glue records in
parent zone. This will lower a risk of breaking the delegation path.
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Matus UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/
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generate WAN traffic.
well, caching makes your benefit, doesn't it?
Any suggestion how to approach this problem?
...don't?
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Matus UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/
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