[Samba] samba-tool PTR with /16 network

Wed Aug 7 09:12:59 UTC 2019

Hai, 

Good your asking this. 
I should have tested it... and NO, PTR lookup is not working correctly in this case. 

I've reported it as a bug. 
https://bugzilla.samba.org/show_bug.cgi?id=14077 

Greetz, 

Louis

Van: Hénoch Hervé [mailto:h.henoch at isc84.org] 
Verzonden: woensdag 7 augustus 2019 11:01
Aan: L.P.H. van Belle; samba at lists.samba.org
Onderwerp: Re: [Samba] samba-tool PTR with /16 network

Are  dig -x <ip> or hostname <ip> find the name of the host ?

Le 07/08/2019 à 10:56, L.P.H. van Belle via samba a écrit :

Yes, offcourse, the 172.19 is a "bad" example. I suggest we use the official RFC 1918 zones. 10.0.0.0/8 172.16.0.0/12 192.168.0.0/16 And for example 192.168.0.0/24 as extra, or people get confused. ;-) Greetz, Louis 

-----Oorspronkelijk bericht----- Van: samba [ MailScanner heeft een e-mail met mogelijk een poging tot fraude gevonden van "lists.samba.org" mailto:samba-bounces at lists.samba.org] Namens Rowland penny via samba Verzonden: woensdag 7 augustus 2019 10:52 Aan: samba at lists.samba.org Onderwerp: Re: [Samba] samba-tool PTR with /16 network On 07/08/2019 09:27, L.P.H. van Belle via samba wrote: 

Hai, Ok, i did a few things on my DC and see the how/what here. First, the zone. samba-tool dns zonecreate rtd-dc1 19.172.in-addr.arpa That worked fine, in windows DNS tool that shows correct. Now i added an PTR with this line. samba-tool dns add dc1 19.172.in-addr.arpa 55.0 PTR 

testhost.internal.domain.tld 

This resulted in a subfolder "0" the 19.172.in-addr.arpa zone. Where the ip resulted in 172.19.0.0.55 Trying to delete 

this from this zone, that did not work, but wait. 

After a few minutes, i was wondery why/what the ... .. I was stunned by it, i refreshed the zone. And hee.. What 

happend.. Now it looks correct. 

The "extra" 0 folder in the arpa zone is gone And the ip what i wanted is in. 172.19.0.55 with the 

corrected hosts assigned to it. 

So i added also in the other range.. samba-tool dns add dc1 19.172.in-addr.arpa 55.1 PTR 

testhost2.internal.domain.tld 

And that resulted nicely in the correct ip 172.19.1.55 So per example samba-tool dns zonecreate rtd-dc1 0.19.172.in-addr.arpa 

for a /24 zone 

samba-tool dns zonecreate rtd-dc1 19.172.in-addr.arpa 

for a /16 zone 

samba-tool dns zonecreate rtd-dc1 172.in-addr.arpa 

for a /8 zone 

Adding the ptr records. (*1) (*2) (*3) (*4) samba-tool dns add dc1.fqdn 1.19.172.in-addr.arpa 55 PTR 

testhost2.internal.domain.tld (/24 ) 

samba-tool dns add dc1.fqdn 19.172.in-addr.arpa 55.1 PTR 

testhost2.internal.domain.tld (/16 ) 

samba-tool dns add dc1.fqdn 172.in-addr.arpa 55.1.19 PTR 

testhost2.internal.domain.tld (/8 ) 

1) the hostname or fully qualified hostname. Adviced is to 

use the FQDN hostname. 

2) the reverse zone. 3) the reverse ip. Here you write the ip from right to 

left. 172.19.1.55 in reverse zone is 55.1.19.172 

4) the hostname where the ip is pointing to. @Rowland, maybe we should add an example as shown here on the wiki. 

Yes, but not with '172.19' ;-) I get the same results, but there is a problem, the OPs ipaddress is for an internet domain: host -t PTR 172.9.0.11 11.0.9.172.in-addr.arpa domain name pointer 172-9-0-11.lightspeed.snantx.sbcglobal.net.  I do hope that the OPs 'domain.lan' is 'snantx.sbcglobal.net' or he is using someone else's IP range, but then again, I hope it isn't, because if it is, his DC is internet resolvable. Rowland -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/options/samba 

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