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Description of problem:
Getting a lot of syslog messages, like:
Jan 27 15:32:25 azurill named[6873]: checkhints: b.root-servers.net/A (199.9.14.201) missing from hints
Jan 27 15:32:25 azurill named[6873]: checkhints: b.root-servers.net/A (192.228.79.201) extra record in hints
Jan 27 15:32:30 azurill named[6873]: checkhints: b.root-servers.net/A (199.9.14.201) missing from hints
Jan 27 15:32:30 azurill named[6873]: checkhints: b.root-servers.net/A (192.228.79.201) extra record in hints
Jan 27 15:34:55 azurill named[6873]: checkhints: b.root-servers.net/A (199.9.14.201) missing from hints
Jan 27 15:34:55 azurill named[6873]: checkhints: b.root-servers.net/A (192.228.79.201) extra record in hints
Jan 27 15:35:04 azurill named[6873]: checkhints: b.root-servers.net/A (199.9.14.201) missing from hints
Jan 27 15:35:04 azurill named[6873]: checkhints: b.root-servers.net/A (192.228.79.201) extra record in hints
Jan 27 15:38:09 azurill named[6873]: checkhints: b.root-servers.net/A (199.9.14.201) missing from hints
Jan 27 15:38:09 azurill named[6873]: checkhints: b.root-servers.net/A (192.228.79.201) extra record in hints
Version-Release number of selected component (if applicable):
How reproducible:
The messages are coming after some days of run on a freshly installed bind package configured to have direct DNS Internet access.
Steps to Reproduce:
1.
2.
3.
Actual results:
The syslog messages above.
Expected results:
No that kind of syslog messages.
Additional info:
That is a similar issue than https://bugzilla.redhat.com/show_bug.cgi?id=1267991
The /var/named/named.ca file is slightly outdated now, the A and AAAA glue record of b.root-servers.net has changed value since the hint file last time updated in the bind package.
The following script:
#! /bin/bash
TMPF1=`mktemp`
TMPF2=`mktemp`
sed -e 's/3600000/518400/' /var/named/named.ca | sort > $TMPF1
dig +bufsize=1200 +norec @a.root-servers.net | sort > $TMPF2
diff $TMPF1 $TMPF2
rm -f $TMPF1 $TMPF2
has the output:
5a6
>
24,25c25,26
< b.root-servers.net. 518400 IN A 192.228.79.201
< b.root-servers.net. 518400 IN AAAA 2001:500:84::b
---
> b.root-servers.net. 518400 IN A 199.9.14.201
> b.root-servers.net. 518400 IN AAAA 2001:500:200::b
28c29
< ; <<>> DiG 9.9.4-RedHat-9.9.4-38.el7_3.2 <<>> +bufsize=1200 +norec @a.root-servers.net
---
> ; <<>> DiG 9.9.4-RedHat-9.9.4-72.el7 <<>> +bufsize=1200 +norec @a.root-servers.net
31c32
< ; EDNS: version: 0, flags:; udp: 1472
---
> ; EDNS: version: 0, flags:; udp: 4096
41c42
< ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 17380
---
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 40498
57c58
< ;; Query time: 18 msec
---
> ;; Query time: 24 msec
60c61
< ;; WHEN: Po kvě 22 10:14:44 CEST 2017
---
> ;; WHEN: Mon Jan 28 14:55:47 CET 2019
The official location of the root hint zone file can be found at:
http://www.internic.net/domain/named.root