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[libvirt] [PATCH v5] Implement DNS SRV record into the bridge driver



Hi,
this is the fifth version of my SRV record for DNSMasq patch rebased
for the current codebase to the bridge driver and libvirt XML file to
include support for the SRV records in the DNS. The syntax is based on
DNSMasq man page and tests for both xml2xml and xml2argv were added as
well. There are some things written a better way in comparison with
version 4, mainly there's no hack in tests/networkxml2argvtest.c and
also the xPath context is changed to use a simpler query using the
virXPathInt() function relative to the current node.

Also, the patch is also fixing the networkxml2argv test to pass both
checks, i.e. both unit tests and also syntax check.

Please review,
Michal

Signed-off-by: Michal Novotny <minovotn redhat com>
---
 docs/formatnetwork.html.in                         |   12 ++
 docs/schemas/network.rng                           |   20 ++-
 docs/schemas/networkcommon.rng                     |   17 +++
 src/conf/network_conf.c                            |  134 +++++++++++++++++++-
 src/conf/network_conf.h                            |   16 +++
 src/network/bridge_driver.c                        |   43 +++++++
 .../nat-network-dns-srv-record-minimal.argv        |   16 +++
 .../nat-network-dns-srv-record-minimal.xml         |   26 ++++
 .../nat-network-dns-srv-record.argv                |   16 +++
 .../nat-network-dns-srv-record.xml                 |   26 ++++
 tests/networkxml2argvtest.c                        |    2 +
 .../nat-network-dns-srv-record-minimal.xml         |   26 ++++
 .../nat-network-dns-srv-record.xml                 |   26 ++++
 .../nat-network-dns-srv-record-minimal.xml         |   26 ++++
 .../nat-network-dns-srv-record.xml                 |   26 ++++
 15 files changed, 423 insertions(+), 9 deletions(-)
 create mode 100644 tests/networkxml2argvdata/nat-network-dns-srv-record-minimal.argv
 create mode 100644 tests/networkxml2argvdata/nat-network-dns-srv-record-minimal.xml
 create mode 100644 tests/networkxml2argvdata/nat-network-dns-srv-record.argv
 create mode 100644 tests/networkxml2argvdata/nat-network-dns-srv-record.xml
 create mode 100644 tests/networkxml2xmlin/nat-network-dns-srv-record-minimal.xml
 create mode 100644 tests/networkxml2xmlin/nat-network-dns-srv-record.xml
 create mode 100644 tests/networkxml2xmlout/nat-network-dns-srv-record-minimal.xml
 create mode 100644 tests/networkxml2xmlout/nat-network-dns-srv-record.xml

diff --git a/docs/formatnetwork.html.in b/docs/formatnetwork.html.in
index 02302fa..755d510 100644
--- a/docs/formatnetwork.html.in
+++ b/docs/formatnetwork.html.in
@@ -345,6 +345,7 @@
         &lt;domain name="example.com"/&gt;
         &lt;dns&gt;
           &lt;txt name="example" value="example value" /&gt;
+          &lt;srv service='name' protocol='tcp' domain='test-domain-name' target='.' port='1024' priority='10' weight='10'/&gt;
           &lt;host ip='192.168.122.2'&gt;
             &lt;hostname&gt;myhost&lt;/hostname&gt;
             &lt;hostname&gt;myhostalias&lt;/hostname&gt;
@@ -396,6 +397,17 @@
             <span class="since">Since 0.9.3</span>
           </dd>
         </dl>
+        <dl>
+          <dt><code>srv</code></dt>
+          <dd>The <code>dns</code> element can have also 0 or more <code>srv</code>
+            record elements. Each <code>srv</code> record element defines a DNS SRV record
+            and has 2 mandatory and 5 optional attributes. The mandatory attributes
+            are service name and protocol (tcp, udp) and the optional attributes are
+            target, port, priority, weight and domain as defined in DNS server SRV
+            RFC (RFC 2782).
+            <span class="since">Since 0.9.9</span>
+          </dd>
+        </dl>
       </dd>
       <dt><code>ip</code></dt>
       <dd>The <code>address</code> attribute defines an IPv4 address in
diff --git a/docs/schemas/network.rng b/docs/schemas/network.rng
index 937e180..5d58fe4 100644
--- a/docs/schemas/network.rng
+++ b/docs/schemas/network.rng
@@ -138,6 +138,19 @@
                 </element>
               </zeroOrMore>
               <zeroOrMore>
+                <element name="srv">
+                  <attribute name="service"><text/></attribute>
+                  <attribute name="protocol"><ref name="protocol"/></attribute>
+                  <optional>
+                    <attribute name="domain"><ref name="dnsName"/></attribute>
+                    <attribute name="target"><text/></attribute>
+                    <attribute name="port"><ref name="unsignedShort"/></attribute>
+                    <attribute name="priority"><ref name="unsignedShort"/></attribute>
+                    <attribute name="weight"><ref name="unsignedShort"/></attribute>
+                  </optional>
+                </element>
+              </zeroOrMore>
+              <zeroOrMore>
                 <element name="host">
                   <attribute name="ip"><ref name="ipv4Addr"/></attribute>
                   <oneOrMore>
@@ -216,11 +229,4 @@
       </interleave>
     </element>
   </define>
-
-  <define name='addr-family'>
-    <data type='string'>
-      <param name="pattern">(ipv4)|(ipv6)</param>
-    </data>
-  </define>
-
 </grammar>
diff --git a/docs/schemas/networkcommon.rng b/docs/schemas/networkcommon.rng
index 3a168c3..2328892 100644
--- a/docs/schemas/networkcommon.rng
+++ b/docs/schemas/networkcommon.rng
@@ -95,4 +95,21 @@
       <param name="minInclusive">1</param>
     </data>
   </define>
+
+  <define name='unsignedShort'>
+    <data type='integer'>
+      <param name="minInclusive">0</param>
+      <param name="maxInclusive">65535</param>
+    </data>
+  </define>
+  <define name='protocol'>
+    <data type='string'>
+      <param name='pattern'>(tcp)|(udp)</param>
+    </data>
+  </define>
+  <define name='addr-family'>
+    <data type='string'>
+      <param name="pattern">(ipv4)|(ipv6)</param>
+    </data>
+  </define>
 </grammar>
diff --git a/src/conf/network_conf.c b/src/conf/network_conf.c
index 1058b07..3479543 100644
--- a/src/conf/network_conf.c
+++ b/src/conf/network_conf.c
@@ -138,6 +138,15 @@ static void virNetworkDNSDefFree(virNetworkDNSDefPtr def)
             }
         }
         VIR_FREE(def->hosts);
+        if (def->nsrvrecords) {
+            while (def->nsrvrecords--) {
+                VIR_FREE(def->srvrecords[def->nsrvrecords].domain);
+                VIR_FREE(def->srvrecords[def->nsrvrecords].service);
+                VIR_FREE(def->srvrecords[def->nsrvrecords].protocol);
+                VIR_FREE(def->srvrecords[def->nsrvrecords].target);
+            }
+        }
+        VIR_FREE(def->srvrecords);
         VIR_FREE(def);
     }
 }
@@ -553,8 +562,103 @@ error:
 }
 
 static int
+virNetworkDNSSrvDefParseXML(virNetworkDNSDefPtr def,
+                            xmlNodePtr cur,
+                            xmlXPathContextPtr ctxt)
+{
+    char *domain;
+    char *service;
+    char *protocol;
+    char *target;
+    int port;
+    int priority;
+    int weight;
+    int ret = 0;
+
+    if (!(service = virXMLPropString(cur, "service"))) {
+        virNetworkReportError(VIR_ERR_XML_DETAIL,
+                              "%s", _("Missing required service attribute in dns srv record"));
+        goto error;
+    }
+
+    if (strlen(service) > DNS_RECORD_LENGTH_SRV) {
+        char *name = NULL;
+
+        virAsprintf(&name, _("Service name is too long, limit is %d bytes"), DNS_RECORD_LENGTH_SRV);
+        virNetworkReportError(VIR_ERR_XML_DETAIL,
+                              "%s", name);
+        free(name);
+        goto error;
+    }
+
+    if (!(protocol = virXMLPropString(cur, "protocol"))) {
+        virNetworkReportError(VIR_ERR_XML_DETAIL,
+                              _("Missing required protocol attribute in dns srv record '%s'"), service);
+        goto error;
+    }
+
+    /* Check whether protocol value is the supported one */
+    if (STRNEQ(protocol, "tcp") && (STRNEQ(protocol, "udp"))) {
+        virNetworkReportError(VIR_ERR_XML_DETAIL,
+                              _("Invalid protocol attribute value '%s'"), protocol);
+        goto error;
+    }
+
+    if (VIR_REALLOC_N(def->srvrecords, def->nsrvrecords + 1) < 0) {
+        virReportOOMError();
+        goto error;
+    }
+
+    def->srvrecords[def->nsrvrecords].service = service;
+    def->srvrecords[def->nsrvrecords].protocol = protocol;
+    def->srvrecords[def->nsrvrecords].domain = NULL;
+    def->srvrecords[def->nsrvrecords].target = NULL;
+    def->srvrecords[def->nsrvrecords].port = 0;
+    def->srvrecords[def->nsrvrecords].priority = 0;
+    def->srvrecords[def->nsrvrecords].weight = 0;
+
+    /* Following attributes are optional but we had to make sure they're NULL above */
+    if ((target = virXMLPropString(cur, "target")) && (domain = virXMLPropString(cur, "domain"))) {
+        xmlNodePtr save_ctxt = ctxt->node;
+
+        ctxt->node = cur;
+        if (virXPathInt("string(./@port)", ctxt, &port))
+            def->srvrecords[def->nsrvrecords].port = port;
+
+        if (virXPathInt("string(./@priority)", ctxt, &priority))
+            def->srvrecords[def->nsrvrecords].priority = priority;
+
+        if (virXPathInt("string(./@weight)", ctxt, &weight))
+            def->srvrecords[def->nsrvrecords].weight = weight;
+        ctxt->node = save_ctxt;
+
+        def->srvrecords[def->nsrvrecords].domain = domain;
+        def->srvrecords[def->nsrvrecords].target = target;
+        def->srvrecords[def->nsrvrecords].port = port;
+        def->srvrecords[def->nsrvrecords].priority = priority;
+        def->srvrecords[def->nsrvrecords].weight = weight;
+    }
+
+    def->nsrvrecords++;
+
+    goto cleanup;
+
+error:
+    VIR_FREE(domain);
+    VIR_FREE(service);
+    VIR_FREE(protocol);
+    VIR_FREE(target);
+
+    ret = -1;
+
+cleanup:
+    return ret;
+}
+
+static int
 virNetworkDNSDefParseXML(virNetworkDNSDefPtr *dnsdef,
-                         xmlNodePtr node)
+                         xmlNodePtr node,
+                         xmlXPathContextPtr ctxt)
 {
     xmlNodePtr cur;
     int ret = -1;
@@ -599,6 +703,11 @@ virNetworkDNSDefParseXML(virNetworkDNSDefPtr *dnsdef,
             name = NULL;
             value = NULL;
         } else if (cur->type == XML_ELEMENT_NODE &&
+            xmlStrEqual(cur->name, BAD_CAST "srv")) {
+            ret = virNetworkDNSSrvDefParseXML(def, cur, ctxt);
+            if (ret < 0)
+                goto error;
+        } else if (cur->type == XML_ELEMENT_NODE &&
             xmlStrEqual(cur->name, BAD_CAST "host")) {
             ret = virNetworkDNSHostsDefParseXML(def, cur);
             if (ret < 0)
@@ -887,7 +996,7 @@ virNetworkDefParseXML(xmlXPathContextPtr ctxt)
 
     dnsNode = virXPathNode("./dns", ctxt);
     if (dnsNode != NULL) {
-        if (virNetworkDNSDefParseXML(&def->dns, dnsNode) < 0)
+        if (virNetworkDNSDefParseXML(&def->dns, dnsNode, ctxt) < 0)
             goto error;
     }
 
@@ -1146,6 +1255,27 @@ virNetworkDNSDefFormat(virBufferPtr buf,
                               def->txtrecords[i].value);
     }
 
+    for (i = 0 ; i < def->nsrvrecords ; i++) {
+        if (def->srvrecords[i].service && def->srvrecords[i].protocol) {
+            virBufferAsprintf(buf, "    <srv service='%s' protocol='%s'",
+                                  def->srvrecords[i].service,
+                                  def->srvrecords[i].protocol);
+
+            if (def->srvrecords[i].domain)
+                virBufferAsprintf(buf, " domain='%s'", def->srvrecords[i].domain);
+            if (def->srvrecords[i].target)
+                virBufferAsprintf(buf, " target='%s'", def->srvrecords[i].target);
+            if (def->srvrecords[i].port)
+                virBufferAsprintf(buf, " port='%d'", def->srvrecords[i].port);
+            if (def->srvrecords[i].priority)
+                virBufferAsprintf(buf, " priority='%d'", def->srvrecords[i].priority);
+            if (def->srvrecords[i].weight)
+                virBufferAsprintf(buf, " weight='%d'", def->srvrecords[i].weight);
+
+            virBufferAsprintf(buf, "/>\n");
+        }
+    }
+
     if (def->nhosts) {
         int ii, j;
 
diff --git a/src/conf/network_conf.h b/src/conf/network_conf.h
index 1be20f8..5ef4878 100644
--- a/src/conf/network_conf.h
+++ b/src/conf/network_conf.h
@@ -24,6 +24,8 @@
 #ifndef __NETWORK_CONF_H__
 # define __NETWORK_CONF_H__
 
+#define DNS_RECORD_LENGTH_SRV  (512 - 30)  /* Limit minus overhead as mentioned in RFC-2782 */
+
 # include <libxml/parser.h>
 # include <libxml/tree.h>
 # include <libxml/xpath.h>
@@ -69,6 +71,18 @@ struct _virNetworkDNSTxtRecordsDef {
     char *value;
 };
 
+typedef struct _virNetworkDNSSrvRecordsDef virNetworkDNSSrvRecordsDef;
+typedef virNetworkDNSSrvRecordsDef *virNetworkDNSSrvRecordsDefPtr;
+struct _virNetworkDNSSrvRecordsDef {
+    char *domain;
+    char *service;
+    char *protocol;
+    char *target;
+    int port;
+    int priority;
+    int weight;
+};
+
 struct _virNetworkDNSHostsDef {
     virSocketAddr ip;
     int nnames;
@@ -82,6 +96,8 @@ struct _virNetworkDNSDef {
     virNetworkDNSTxtRecordsDefPtr txtrecords;
     unsigned int nhosts;
     virNetworkDNSHostsDefPtr hosts;
+    unsigned int nsrvrecords;
+    virNetworkDNSSrvRecordsDefPtr srvrecords;
 };
 
 typedef struct _virNetworkDNSDef *virNetworkDNSDefPtr;
diff --git a/src/network/bridge_driver.c b/src/network/bridge_driver.c
index 63338a2..0c0e7a7 100644
--- a/src/network/bridge_driver.c
+++ b/src/network/bridge_driver.c
@@ -527,6 +527,49 @@ networkBuildDnsmasqArgv(virNetworkObjPtr network,
             virCommandAddArgPair(cmd, "--txt-record", record);
             VIR_FREE(record);
         }
+
+        for (i = 0; i < dns->nsrvrecords; i++) {
+            char *record = NULL;
+            char *recordPort = NULL;
+            char *recordPriority = NULL;
+            char *recordWeight = NULL;
+
+            if (dns->srvrecords[i].service && dns->srvrecords[i].protocol) {
+                if (dns->srvrecords[i].port) {
+                    if (virAsprintf(&recordPort, "%d", dns->srvrecords[i].port) < 0) {
+                        virReportOOMError();
+                        goto cleanup;
+                    }
+                }
+                if (dns->srvrecords[i].priority) {
+                    if (virAsprintf(&recordPriority, "%d", dns->srvrecords[i].priority) < 0) {
+                        virReportOOMError();
+                        goto cleanup;
+                    }
+                }
+                if (dns->srvrecords[i].weight) {
+                    if (virAsprintf(&recordWeight, "%d", dns->srvrecords[i].weight) < 0) {
+                        virReportOOMError();
+                        goto cleanup;
+                    }
+                }
+
+                if (virAsprintf(&record, "%s.%s.%s,%s,%s,%s,%s",
+                                dns->srvrecords[i].service,
+                                dns->srvrecords[i].protocol,
+                                dns->srvrecords[i].domain   ? dns->srvrecords[i].domain : "",
+                                dns->srvrecords[i].target   ? dns->srvrecords[i].target : "",
+                                recordPort                  ? recordPort                : "",
+                                recordPriority              ? recordPriority            : "",
+                                recordWeight                ? recordWeight              : "") < 0) {
+                    virReportOOMError();
+                    goto cleanup;
+                }
+
+                virCommandAddArgPair(cmd, "--srv-host", record);
+                VIR_FREE(record);
+            }
+        }
     }
 
     /*
diff --git a/tests/networkxml2argvdata/nat-network-dns-srv-record-minimal.argv b/tests/networkxml2argvdata/nat-network-dns-srv-record-minimal.argv
new file mode 100644
index 0000000..021e8f0
--- /dev/null
+++ b/tests/networkxml2argvdata/nat-network-dns-srv-record-minimal.argv
@@ -0,0 +1,16 @@
+/usr/sbin/dnsmasq \
+--strict-order \
+--bind-interfaces \
+--conf-file= \
+--except-interface lo \
+--srv-host=name.tcp.,,,, \
+--listen-address 192.168.122.1 \
+--listen-address 192.168.123.1 \
+--listen-address 2001:db8:ac10:fe01::1 \
+--listen-address 2001:db8:ac10:fd01::1 \
+--listen-address 10.24.10.1 \
+--dhcp-range 192.168.122.2,192.168.122.254 \
+--dhcp-leasefile=/var/lib/libvirt/dnsmasq/default.leases \
+--dhcp-lease-max=253 \
+--dhcp-no-override \
+--dhcp-hostsfile=/var/lib/libvirt/dnsmasq/default.hostsfile\
diff --git a/tests/networkxml2argvdata/nat-network-dns-srv-record-minimal.xml b/tests/networkxml2argvdata/nat-network-dns-srv-record-minimal.xml
new file mode 100644
index 0000000..e9b7680
--- /dev/null
+++ b/tests/networkxml2argvdata/nat-network-dns-srv-record-minimal.xml
@@ -0,0 +1,26 @@
+<network>
+  <name>default</name>
+  <uuid>81ff0d90-c91e-6742-64da-4a736edb9a9b</uuid>
+  <forward dev='eth1' mode='nat'>
+    <interface dev='eth1'/>
+  </forward>
+  <bridge name='virbr0' stp='on' delay='0' />
+  <dns>
+    <srv service='name' protocol='tcp' />
+  </dns>
+  <ip address='192.168.122.1' netmask='255.255.255.0'>
+    <dhcp>
+      <range start='192.168.122.2' end='192.168.122.254' />
+      <host mac='00:16:3e:77:e2:ed' name='a.example.com' ip='192.168.122.10' />
+      <host mac='00:16:3e:3e:a9:1a' name='b.example.com' ip='192.168.122.11' />
+    </dhcp>
+  </ip>
+  <ip family='ipv4' address='192.168.123.1' netmask='255.255.255.0'>
+  </ip>
+  <ip family='ipv6' address='2001:db8:ac10:fe01::1' prefix='64'>
+  </ip>
+  <ip family='ipv6' address='2001:db8:ac10:fd01::1' prefix='64'>
+  </ip>
+  <ip family='ipv4' address='10.24.10.1'>
+  </ip>
+</network>
diff --git a/tests/networkxml2argvdata/nat-network-dns-srv-record.argv b/tests/networkxml2argvdata/nat-network-dns-srv-record.argv
new file mode 100644
index 0000000..85afbba
--- /dev/null
+++ b/tests/networkxml2argvdata/nat-network-dns-srv-record.argv
@@ -0,0 +1,16 @@
+/usr/sbin/dnsmasq \
+--strict-order \
+--bind-interfaces \
+--conf-file= \
+--except-interface lo \
+--srv-host=name.tcp.test-domain-name,.,1024,10,10 \
+--listen-address 192.168.122.1 \
+--listen-address 192.168.123.1 \
+--listen-address 2001:db8:ac10:fe01::1 \
+--listen-address 2001:db8:ac10:fd01::1 \
+--listen-address 10.24.10.1 \
+--dhcp-range 192.168.122.2,192.168.122.254 \
+--dhcp-leasefile=/var/lib/libvirt/dnsmasq/default.leases \
+--dhcp-lease-max=253 \
+--dhcp-no-override \
+--dhcp-hostsfile=/var/lib/libvirt/dnsmasq/default.hostsfile\
diff --git a/tests/networkxml2argvdata/nat-network-dns-srv-record.xml b/tests/networkxml2argvdata/nat-network-dns-srv-record.xml
new file mode 100644
index 0000000..4be85b5
--- /dev/null
+++ b/tests/networkxml2argvdata/nat-network-dns-srv-record.xml
@@ -0,0 +1,26 @@
+<network>
+  <name>default</name>
+  <uuid>81ff0d90-c91e-6742-64da-4a736edb9a9b</uuid>
+  <forward dev='eth1' mode='nat'>
+    <interface dev='eth1'/>
+  </forward>
+  <bridge name='virbr0' stp='on' delay='0' />
+  <dns>
+    <srv service='name' protocol='tcp' domain='test-domain-name' target='.' port='1024' priority='10' weight='10' />
+  </dns>
+  <ip address='192.168.122.1' netmask='255.255.255.0'>
+    <dhcp>
+      <range start='192.168.122.2' end='192.168.122.254' />
+      <host mac='00:16:3e:77:e2:ed' name='a.example.com' ip='192.168.122.10' />
+      <host mac='00:16:3e:3e:a9:1a' name='b.example.com' ip='192.168.122.11' />
+    </dhcp>
+  </ip>
+  <ip family='ipv4' address='192.168.123.1' netmask='255.255.255.0'>
+  </ip>
+  <ip family='ipv6' address='2001:db8:ac10:fe01::1' prefix='64'>
+  </ip>
+  <ip family='ipv6' address='2001:db8:ac10:fd01::1' prefix='64'>
+  </ip>
+  <ip family='ipv4' address='10.24.10.1'>
+  </ip>
+</network>
diff --git a/tests/networkxml2argvtest.c b/tests/networkxml2argvtest.c
index 4a11d6f..2dd9b7f 100644
--- a/tests/networkxml2argvtest.c
+++ b/tests/networkxml2argvtest.c
@@ -120,6 +120,8 @@ mymain(void)
     DO_TEST("netboot-network");
     DO_TEST("netboot-proxy-network");
     DO_TEST("nat-network-dns-txt-record");
+    DO_TEST("nat-network-dns-srv-record");
+    DO_TEST("nat-network-dns-srv-record-minimal");
     DO_TEST("nat-network-dns-hosts");
 
     return (ret==0 ? EXIT_SUCCESS : EXIT_FAILURE);
diff --git a/tests/networkxml2xmlin/nat-network-dns-srv-record-minimal.xml b/tests/networkxml2xmlin/nat-network-dns-srv-record-minimal.xml
new file mode 100644
index 0000000..e9b7680
--- /dev/null
+++ b/tests/networkxml2xmlin/nat-network-dns-srv-record-minimal.xml
@@ -0,0 +1,26 @@
+<network>
+  <name>default</name>
+  <uuid>81ff0d90-c91e-6742-64da-4a736edb9a9b</uuid>
+  <forward dev='eth1' mode='nat'>
+    <interface dev='eth1'/>
+  </forward>
+  <bridge name='virbr0' stp='on' delay='0' />
+  <dns>
+    <srv service='name' protocol='tcp' />
+  </dns>
+  <ip address='192.168.122.1' netmask='255.255.255.0'>
+    <dhcp>
+      <range start='192.168.122.2' end='192.168.122.254' />
+      <host mac='00:16:3e:77:e2:ed' name='a.example.com' ip='192.168.122.10' />
+      <host mac='00:16:3e:3e:a9:1a' name='b.example.com' ip='192.168.122.11' />
+    </dhcp>
+  </ip>
+  <ip family='ipv4' address='192.168.123.1' netmask='255.255.255.0'>
+  </ip>
+  <ip family='ipv6' address='2001:db8:ac10:fe01::1' prefix='64'>
+  </ip>
+  <ip family='ipv6' address='2001:db8:ac10:fd01::1' prefix='64'>
+  </ip>
+  <ip family='ipv4' address='10.24.10.1'>
+  </ip>
+</network>
diff --git a/tests/networkxml2xmlin/nat-network-dns-srv-record.xml b/tests/networkxml2xmlin/nat-network-dns-srv-record.xml
new file mode 100644
index 0000000..4be85b5
--- /dev/null
+++ b/tests/networkxml2xmlin/nat-network-dns-srv-record.xml
@@ -0,0 +1,26 @@
+<network>
+  <name>default</name>
+  <uuid>81ff0d90-c91e-6742-64da-4a736edb9a9b</uuid>
+  <forward dev='eth1' mode='nat'>
+    <interface dev='eth1'/>
+  </forward>
+  <bridge name='virbr0' stp='on' delay='0' />
+  <dns>
+    <srv service='name' protocol='tcp' domain='test-domain-name' target='.' port='1024' priority='10' weight='10' />
+  </dns>
+  <ip address='192.168.122.1' netmask='255.255.255.0'>
+    <dhcp>
+      <range start='192.168.122.2' end='192.168.122.254' />
+      <host mac='00:16:3e:77:e2:ed' name='a.example.com' ip='192.168.122.10' />
+      <host mac='00:16:3e:3e:a9:1a' name='b.example.com' ip='192.168.122.11' />
+    </dhcp>
+  </ip>
+  <ip family='ipv4' address='192.168.123.1' netmask='255.255.255.0'>
+  </ip>
+  <ip family='ipv6' address='2001:db8:ac10:fe01::1' prefix='64'>
+  </ip>
+  <ip family='ipv6' address='2001:db8:ac10:fd01::1' prefix='64'>
+  </ip>
+  <ip family='ipv4' address='10.24.10.1'>
+  </ip>
+</network>
diff --git a/tests/networkxml2xmlout/nat-network-dns-srv-record-minimal.xml b/tests/networkxml2xmlout/nat-network-dns-srv-record-minimal.xml
new file mode 100644
index 0000000..e9b7680
--- /dev/null
+++ b/tests/networkxml2xmlout/nat-network-dns-srv-record-minimal.xml
@@ -0,0 +1,26 @@
+<network>
+  <name>default</name>
+  <uuid>81ff0d90-c91e-6742-64da-4a736edb9a9b</uuid>
+  <forward dev='eth1' mode='nat'>
+    <interface dev='eth1'/>
+  </forward>
+  <bridge name='virbr0' stp='on' delay='0' />
+  <dns>
+    <srv service='name' protocol='tcp' />
+  </dns>
+  <ip address='192.168.122.1' netmask='255.255.255.0'>
+    <dhcp>
+      <range start='192.168.122.2' end='192.168.122.254' />
+      <host mac='00:16:3e:77:e2:ed' name='a.example.com' ip='192.168.122.10' />
+      <host mac='00:16:3e:3e:a9:1a' name='b.example.com' ip='192.168.122.11' />
+    </dhcp>
+  </ip>
+  <ip family='ipv4' address='192.168.123.1' netmask='255.255.255.0'>
+  </ip>
+  <ip family='ipv6' address='2001:db8:ac10:fe01::1' prefix='64'>
+  </ip>
+  <ip family='ipv6' address='2001:db8:ac10:fd01::1' prefix='64'>
+  </ip>
+  <ip family='ipv4' address='10.24.10.1'>
+  </ip>
+</network>
diff --git a/tests/networkxml2xmlout/nat-network-dns-srv-record.xml b/tests/networkxml2xmlout/nat-network-dns-srv-record.xml
new file mode 100644
index 0000000..4be85b5
--- /dev/null
+++ b/tests/networkxml2xmlout/nat-network-dns-srv-record.xml
@@ -0,0 +1,26 @@
+<network>
+  <name>default</name>
+  <uuid>81ff0d90-c91e-6742-64da-4a736edb9a9b</uuid>
+  <forward dev='eth1' mode='nat'>
+    <interface dev='eth1'/>
+  </forward>
+  <bridge name='virbr0' stp='on' delay='0' />
+  <dns>
+    <srv service='name' protocol='tcp' domain='test-domain-name' target='.' port='1024' priority='10' weight='10' />
+  </dns>
+  <ip address='192.168.122.1' netmask='255.255.255.0'>
+    <dhcp>
+      <range start='192.168.122.2' end='192.168.122.254' />
+      <host mac='00:16:3e:77:e2:ed' name='a.example.com' ip='192.168.122.10' />
+      <host mac='00:16:3e:3e:a9:1a' name='b.example.com' ip='192.168.122.11' />
+    </dhcp>
+  </ip>
+  <ip family='ipv4' address='192.168.123.1' netmask='255.255.255.0'>
+  </ip>
+  <ip family='ipv6' address='2001:db8:ac10:fe01::1' prefix='64'>
+  </ip>
+  <ip family='ipv6' address='2001:db8:ac10:fd01::1' prefix='64'>
+  </ip>
+  <ip family='ipv4' address='10.24.10.1'>
+  </ip>
+</network>
-- 
1.7.7.3


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