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From "Alex Huang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CLOUDSTACK-282) Virtual Routers do not properly resolve DNS SRV Records
Date Mon, 08 Oct 2012 08:06:03 GMT

     [ https://issues.apache.org/jira/browse/CLOUDSTACK-282?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Alex Huang updated CLOUDSTACK-282:
----------------------------------

    Fix Version/s: 4.1.0
    
> Virtual Routers do not properly resolve DNS SRV Records
> -------------------------------------------------------
>
>                 Key: CLOUDSTACK-282
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-282
>             Project: CloudStack
>          Issue Type: Bug
>          Components: Network Controller
>    Affects Versions: pre-4.0.0
>         Environment: Cloudstack 3.02 Management Server on Centos 6.2, Xenserver 6.02
Hosts 
>            Reporter: Nik Martin
>            Priority: Minor
>             Fix For: 4.1.0
>
>
> When using SNAT Networking, I have a VM with a Static NAT IP Assinged in Cloudstack.
 The Centos 6.2 VM has dhcp defined as the network protocol, and gets a private network IP,
and a Static NAT Public IP.  /etc/resolv.conf on the guest VM gets written out by dhclient,
and has one nameserver defined: 10.1.1.1, which is the virtual router for the guest network.
 If doing a DIG lookup of a SRV record in the form:
>  
> # dig _sip._tcp.voipstack.net SRV
> ; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.10.rc1.el6_3.4 <<>> _sip._tcp.voipstack.net
SRV
> ;; global options: +cmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 576
> ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
> ;; QUESTION SECTION:
> ;_sip._tcp.voipstack.net.	IN	SRV
> ;; Query time: 1 msec
> ;; SERVER: 10.1.1.1#53(10.1.1.1)
> ;; WHEN: Sun Oct  7 13:40:43 2012
> ;; MSG SIZE  rcvd: 41
> Nothing is returned.
> If I manually edit /etc/resolv.conf, and add: nameserver 8.8.8.8, and do the same query,
I get:
> # dig _sip._tcp.voipstack.net SRV
> ; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.10.rc1.el6_3.4 <<>> _sip._tcp.voipstack.net
SRV
> ;; global options: +cmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 42375
> ;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 0
> ;; QUESTION SECTION:
> ;_sip._tcp.voipstack.net.	IN	SRV
> ;; ANSWER SECTION:
> _sip._tcp.voipstack.net. 1606	IN	SRV	1 9 5060 as2.voipstack.net.
> _sip._tcp.voipstack.net. 1606	IN	SRV	0 9 5060 as1.voipstack.net.
> ;; Query time: 36 msec
> ;; SERVER: 8.8.8.8#53(8.8.8.8)
> ;; WHEN: Sun Oct  7 13:33:39 2012
> ;; MSG SIZE  rcvd: 115
> The virtual router should resolve all valid DNS record types

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