Re: SRV query with no domain?
Of course a dig query will fail without the domain appended. Dig takes you query at face value and will not append domains from your search suffix list like nslookup and ping will. You ALWAYS have to fully qualify your requests when using dig. Chris. On 12-08-15 3:29 PM, wbr...@e1b.org wbr...@e1b.org wrote: kevin wrote on 08/15/2012 12:52:18 PM: I don't believe SRV lookups use the search directive in /etc/ resolv.conf; I think that's only for A (name-to-address) lookups. But I could be wrong on that... Using host I was able to do a search for _sip._tcp for the search domain on my system (domain changed to example.org): wbrown@wbrown-D630:~$ host -t srv _sip._tcp _sip._tcp.example.org has SRV record 0 0 5060 tandberg-vcse.example.org. wbrown@wbrown-D630:~$ host -t srv _sip._tcp.example.org _sip._tcp.example.org has SRV record 0 0 5060 tandberg-vcse.example.org. Dig fails on same query without domain, succeeds if it is included: wbrown@wbrown-D630:~$ dig +short _sip._tcp srv wbrown@wbrown-D630:~$ dig +short _sip._tcp.example.org srv 0 0 5060 tandberg-vcse.example.org. Confidentiality Notice: This electronic message and any attachments may contain confidential or privileged information, and is intended only for the individual or entity identified above as the addressee. If you are not the addressee (or the employee or agent responsible to deliver it to the addressee), or if this message has been addressed to you in error, you are hereby notified that you may not copy, forward, disclose or use any part of this message or any attachments. Please notify the sender immediately by return e-mail or telephone and delete this message from your system. ___ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
Re: SRV query with no domain?
On 16 Aug 2012, at 15:42, Christopher Cain wrote: Of course a dig query will fail without the domain appended. Dig takes you query at face value and will not append domains from your search suffix list like nslookup and ping will. You ALWAYS have to fully qualify your requests when using dig. unless you use the +search option ... /Niall ___ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
SRV query with no domain?
Hello, I hope this is the right list.. I am using bind 9.8.2on centos 6 with a system called openims. I am trying to get my bind server to respond to an SRV query of _sip._udp where the query has no domain. I am told by the openims folks that I should be able to get my bind to respond but I have been unable to. If I do a dig it only works if I have a +search on the request. without teh +search I get NXDOMAIN back. Is this something I should expect bind to support? thank you... ___ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
Re: SRV query with no domain?
On 15/08/12 15:42, Thomas Secula wrote:
Hello,
I hope this is the right list.. I am using bind 9.8.2on centos 6 with a
system called openims. I am trying to get my bind server to respond to
an SRV query of _sip._udp where the query has no domain.
Yuck. That's horrible. Are you *sure* that's what you want? You can't
set the search path on the client(s)?
the openims folks that I should be able to get my bind to respond but I
have been unable to.
DNS query names are all full-qualified.
If you *really* want to respond to the name _sip._udp. (note the
trailing dot) you'll need a create a zone to contain the name. You can't
make bind qualify the name for you.
For example:
zone _udp {
type master;
file _udp.zone;
};
...and in the zone:
_udp. IN SOA ...
_sip._udp. IN SRV ...
But this is a bad thing to do; it might cause problems in a number of
ways down the road, and I strongly recommend you don't do it.
Get your clients to issue fully-qualified DNS name - preferably by
actually querying a fully-qualified name, alternatively by putting:
search your.domain.com
...in /etc/resolv.conf or the system equivalent.
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Re: SRV query with no domain?
In message cae6g+hspffba0edc1b3wis__ap_ruenwpsb_2hyvqrerdis...@mail.gmail.com , Thomas Secula writes: Hello, I hope this is the right list.. I am using bind 9.8.2on centos 6 with a system called openims. I am trying to get my bind server to respond to an SRV query of _sip._udp where the query has no domain. _sip._udp *is* a domain name. It's no different than example.net as far as dig is concerned. I am told by the openims folks that I should be able to get my bind to respond but I have been unable to. If I do a dig it only works if I have a +search on the request. without teh +search I get NXDOMAIN back. Is this something I should expect bind to support? thank you... -- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: ma...@isc.org ___ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
Re: SRV query with no domain?
There's no point in answering a domain-less SRV-record query, since the whole point of the SRV record type is to allow clients to find resources associated with a particular domain (and protocol/transport). You need to set the proper domain on the client doing the lookup. - Kevin On 8/15/2012 10:42 AM, Thomas Secula wrote: Hello, I hope this is the right list.. I am using bind 9.8.2on centos 6 with a system called openims. I am trying to get my bind server to respond to an SRV query of _sip._udp where the query has no domain. I am told by the openims folks that I should be able to get my bind to respond but I have been unable to. If I do a dig it only works if I have a +search on the request. without teh +search I get NXDOMAIN back. Is this something I should expect bind to support? thank you... ___ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users ___ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
Re: SRV query with no domain?
That's what I tried to tell the OpenIMS folks. I have search mydomain in/etc/resolv but somehow they aren't adding mydomain to the query. This only happens when the PCSCF tries to find the ICSCF after receiving a SIP invite with a TEL uri which by definition has no domain since it's in the pstn. I don't believe this is a bind issue as I would expect the P-CSCF to get that NXDOMAIN and be able to handle it, likely an openims bug. thanks for all your replies!!!1 On Wed, Aug 15, 2012 at 10:57 AM, Kevin Darcy k...@chrysler.com wrote: There's no point in answering a domain-less SRV-record query, since the whole point of the SRV record type is to allow clients to find resources associated with a particular domain (and protocol/transport). You need to set the proper domain on the client doing the lookup. - Kevin On 8/15/2012 10:42 AM, Thomas Secula wrote: Hello, I hope this is the right list.. I am using bind 9.8.2on centos 6 with a system called openims. I am trying to get my bind server to respond to an SRV query of _sip._udp where the query has no domain. I am told by the openims folks that I should be able to get my bind to respond but I have been unable to. If I do a dig it only works if I have a +search on the request. without teh +search I get NXDOMAIN back. Is this something I should expect bind to support? thank you... ___ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing listbind-us...@lists.isc.orghttps://lists.isc.org/mailman/listinfo/bind-users ___ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users ___ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
Re: SRV query with no domain?
that's how I understand it also. This DNS query is happening before the SCSCF would issue an ENUM. I believe it would eventually do this but the purpose of this dns query is to find the SIP entry point (icscf) into a domain for the call. I think this is either a config issue on my end or a bug. The tel uri is coming in from an ims subscriber who is registered to the domain. I would think the P-CSCF would use the domain from the caller for the dns query. Thanks for verifying that bind is doing the right thing On Wed, Aug 15, 2012 at 12:52 PM, Kevin Darcy k...@chrysler.com wrote: I don't believe SRV lookups use the search directive in /etc/resolv.conf; I think that's only for A (name-to-address) lookups. But I could be wrong on that... It all comes back to: the client should know what domain contains the resources it's looking for. There's fundamentally no such thing as a generic SRV lookup; SRV lookups are always contextual to a particular domain. As for your point about tel: URIs having no domain, I'm no IP telephony expert by any stretch of the imagination, but isn't ENUM used to map a phone number (as found in a tel: URI) to one or more domains for the SRV lookup(s)? Or am I way off-base here? - Kevin On 8/15/2012 12:06 PM, Thomas Secula wrote: That's what I tried to tell the OpenIMS folks. I have search mydomain in/etc/resolv but somehow they aren't adding mydomain to the query. This only happens when the PCSCF tries to find the ICSCF after receiving a SIP invite with a TEL uri which by definition has no domain since it's in the pstn. I don't believe this is a bind issue as I would expect the P-CSCF to get that NXDOMAIN and be able to handle it, likely an openims bug. thanks for all your replies!!!1 On Wed, Aug 15, 2012 at 10:57 AM, Kevin Darcy k...@chrysler.com wrote: There's no point in answering a domain-less SRV-record query, since the whole point of the SRV record type is to allow clients to find resources associated with a particular domain (and protocol/transport). You need to set the proper domain on the client doing the lookup. - Kevin On 8/15/2012 10:42 AM, Thomas Secula wrote: Hello, I hope this is the right list.. I am using bind 9.8.2on centos 6 with a system called openims. I am trying to get my bind server to respond to an SRV query of _sip._udp where the query has no domain. I am told by the openims folks that I should be able to get my bind to respond but I have been unable to. If I do a dig it only works if I have a +search on the request. without teh +search I get NXDOMAIN back. Is this something I should expect bind to support? thank you... ___ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing listbind-us...@lists.isc.orghttps://lists.isc.org/mailman/listinfo/bind-users ___ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users ___ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users ___ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
Re: SRV query with no domain?
kevin wrote on 08/15/2012 12:52:18 PM: I don't believe SRV lookups use the search directive in /etc/ resolv.conf; I think that's only for A (name-to-address) lookups. But I could be wrong on that... Using host I was able to do a search for _sip._tcp for the search domain on my system (domain changed to example.org): wbrown@wbrown-D630:~$ host -t srv _sip._tcp _sip._tcp.example.org has SRV record 0 0 5060 tandberg-vcse.example.org. wbrown@wbrown-D630:~$ host -t srv _sip._tcp.example.org _sip._tcp.example.org has SRV record 0 0 5060 tandberg-vcse.example.org. Dig fails on same query without domain, succeeds if it is included: wbrown@wbrown-D630:~$ dig +short _sip._tcp srv wbrown@wbrown-D630:~$ dig +short _sip._tcp.example.org srv 0 0 5060 tandberg-vcse.example.org. Confidentiality Notice: This electronic message and any attachments may contain confidential or privileged information, and is intended only for the individual or entity identified above as the addressee. If you are not the addressee (or the employee or agent responsible to deliver it to the addressee), or if this message has been addressed to you in error, you are hereby notified that you may not copy, forward, disclose or use any part of this message or any attachments. Please notify the sender immediately by return e-mail or telephone and delete this message from your system. ___ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
