BIG problem with reverse lookup
marcroy.olsen at gmail.com
marcroy.olsen at gmail.com
Tue Mar 18 10:31:07 UTC 2008
hi list,
I have some problems doing reverse lookups. It works fin on me lan
using me own DNS server:
#nslookup 130.226.142.23
Server: 130.226.142.2
Address: 130.226.142.2#53
23.142.226.130.in-addr.arpa name = mx1.itu.dk.
It also works if I ask me own DNS server from the outside:
#nslookup 130.226.142.23 130.226.142.2
Server: 130.226.142.2
Address: 130.226.142.2#53
23.142.226.130.in-addr.arpa name = mx1.itu.dk.
But if I just use a random DNS server outside my lan, i get:
#nslookup
> set debug
> 130.226.142.23
Server: 192.168.1.1
Address: 192.168.1.1#53
------------
QUESTIONS:
23.142.226.130.in-addr.arpa, type = PTR, class = IN
ANSWERS:
AUTHORITY RECORDS:
-> 142.226.130.in-addr.arpa
origin = ns.itu.dk
mail addr = hostmaster.itu.dk
serial = 2006040401
refresh = 28800
retry = 7200
expire = 604800
minimum = 86400
ADDITIONAL RECORDS:
------------
** server can't find 23.142.226.130.in-addr.arpa: NXDOMAIN
But it works for other address in that same zone file (also outside me
lan):
#nslookup
> set debug
> 130.226.142.19
Server: 212.97.202.2
Address: 212.97.202.2#53
------------
QUESTIONS:
19.142.226.130.in-addr.arpa, type = PTR, class = IN
ANSWERS:
-> 19.142.226.130.in-addr.arpa
name = haddock.itu.dk.
AUTHORITY RECORDS:
-> .
nameserver = j.root-servers.net.
-> .
nameserver = k.root-servers.net.
ADDITIONAL RECORDS:
------------
Non-authoritative answer:
19.142.226.130.in-addr.arpa name = haddock.itu.dk.
Authoritative answers can be found from:
. nameserver = j.root-servers.net.
>
Any one have any idea to what this could be?
I can see on the lookup that fails, that the serial is 2006040401. But
if I look in the 142.226.130.in-addr.arpa zone file I have this
serial: 2008180301
And I have made changes to the 142.226.130.in-addr.arpa zone file
since 2006, and this works fin.
Any help or test i might run to get more info is appreciated.
OS:Fedora 7
Bind: 9.4.1
Best Regard
Marc
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