Root Hints.
Beavis
pfunix at gmail.com
Wed Feb 6 13:36:54 UTC 2008
Guys,
hi, I try to run the query that mark presented. on the upper part
of my root.hints file i got the following message:
;; Connection to 2001:503:ba3e::2:30#53(2001:503:ba3e::2:30) for .
failed: host unre
achable.
; <<>> DiG 9.3.4 <<>> +vc +bufsize=1200 +norec NS . @a.root-servers.net
--snip--
this is the result on my internal dns's(openbsd) but i ran the same
query against my mac and it worked perfectly. well just wanted to
bring this out.
thanks again guys!
-b
On Feb 4, 2008 5:00 PM, Mark Andrews <Mark_Andrews at isc.org> wrote:
>
> The 6 of root servers now have IPv6 addresses. You should
> be updating your hints file to reflect this change.
>
> You can retrieve a new set of root hint by running:
>
> dig +bufsize=1200 +norec NS . @a.root-servers.net > newhints
>
> Note: +bufsize=1200 is needed as the response will no longer
> fit in plain DNS/UDP response.
>
> If your version of dig does not support +bufsize= it really is
> time to upgrade. The world is passing you by.
>
> If you have a firewall that doesn't allow EDNS packet bigger
> than 512 bytes through it is time to upgrade that firewall.
> In the meantime you can use a query like this to update the
> root hints.
>
> dig +vc +norec NS . @a.root-servers.net > newhints
>
> Note: this is not a long term solution. You will get better
> performance out of your DNS servers if you upgrade.
>
> Mark
>
> ; <<>> DiG 9.3.4-P1 <<>> +bufsize=1200 +norec NS . @a.root-servers.net
> ; (2 servers found)
> ;; global options: printcmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 31496
> ;; flags: qr aa; QUERY: 1, ANSWER: 13, AUTHORITY: 0, ADDITIONAL: 20
>
> ;; OPT PSEUDOSECTION:
> ; EDNS: version: 0, flags:; udp: 4096
> ;; QUESTION SECTION:
> ;. IN NS
>
> ;; ANSWER SECTION:
> . 518400 IN NS E.ROOT-SERVERS.NET.
> . 518400 IN NS F.ROOT-SERVERS.NET.
> . 518400 IN NS G.ROOT-SERVERS.NET.
> . 518400 IN NS H.ROOT-SERVERS.NET.
> . 518400 IN NS I.ROOT-SERVERS.NET.
> . 518400 IN NS J.ROOT-SERVERS.NET.
> . 518400 IN NS K.ROOT-SERVERS.NET.
> . 518400 IN NS L.ROOT-SERVERS.NET.
> . 518400 IN NS M.ROOT-SERVERS.NET.
> . 518400 IN NS A.ROOT-SERVERS.NET.
> . 518400 IN NS B.ROOT-SERVERS.NET.
> . 518400 IN NS C.ROOT-SERVERS.NET.
> . 518400 IN NS D.ROOT-SERVERS.NET.
>
> ;; ADDITIONAL SECTION:
> A.ROOT-SERVERS.NET. 3600000 IN A 198.41.0.4
> A.ROOT-SERVERS.NET. 3600000 IN AAAA 2001:503:ba3e::2:30
> B.ROOT-SERVERS.NET. 3600000 IN A 192.228.79.201
> C.ROOT-SERVERS.NET. 3600000 IN A 192.33.4.12
> D.ROOT-SERVERS.NET. 3600000 IN A 128.8.10.90
> E.ROOT-SERVERS.NET. 3600000 IN A 192.203.230.10
> F.ROOT-SERVERS.NET. 3600000 IN A 192.5.5.241
> F.ROOT-SERVERS.NET. 3600000 IN AAAA 2001:500:2f::f
> G.ROOT-SERVERS.NET. 3600000 IN A 192.112.36.4
> H.ROOT-SERVERS.NET. 3600000 IN A 128.63.2.53
> H.ROOT-SERVERS.NET. 3600000 IN AAAA 2001:500:1::803f:235
> I.ROOT-SERVERS.NET. 3600000 IN A 192.36.148.17
> J.ROOT-SERVERS.NET. 3600000 IN A 192.58.128.30
> J.ROOT-SERVERS.NET. 3600000 IN AAAA 2001:503:c27::2:30
> K.ROOT-SERVERS.NET. 3600000 IN A 193.0.14.129
> K.ROOT-SERVERS.NET. 3600000 IN AAAA 2001:7fd::1
> L.ROOT-SERVERS.NET. 3600000 IN A 199.7.83.42
> M.ROOT-SERVERS.NET. 3600000 IN A 202.12.27.33
> M.ROOT-SERVERS.NET. 3600000 IN AAAA 2001:dc3::35
>
> ;; Query time: 246 msec
> ;; SERVER: 2001:503:ba3e::2:30#53(2001:503:ba3e::2:30)
> ;; WHEN: Tue Feb 5 09:56:13 2008
> ;; MSG SIZE rcvd: 615
>
> --
> Mark Andrews, ISC
> 1 Seymour St., Dundas Valley, NSW 2117, Australia
> PHONE: +61 2 9871 4742 INTERNET: Mark_Andrews at isc.org
>
>
>
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