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 >
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