diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index ae8688e92d52a97de333f6f03326d8ecd6ad7df3..3d05844aa4d0e1fe7ea06326f9321a35b0554da3 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -12016,6 +12016,27 @@ virDomainNetFindIdx(virDomainDefPtr def, virDomainNetDefPtr net)
     return matchidx;
 }
 
+bool
+virDomainHasNet(virDomainDefPtr def, virDomainNetDefPtr net)
+{
+    size_t i;
+    bool PCIAddrSpecified = virDomainDeviceAddressIsValid(&net->info,
+                                                          VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI);
+
+    for (i = 0; i < def->nnets; i++) {
+        if (virMacAddrCmp(&def->nets[i]->mac, &net->mac))
+            continue;
+
+        if (PCIAddrSpecified) {
+            if (virDevicePCIAddressEqual(&def->nets[i]->info.addr.pci,
+                                         &net->info.addr.pci))
+                return true;
+        } else {
+            return true;
+        }
+    }
+    return false;
+}
 
 void
 virDomainNetRemoveHostdev(virDomainDefPtr def,
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index ea463cb8727df2f53e664ce8524aaec67bce8f98..f36315be5169e06aeb50bd06c31475be98337b0a 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -2603,6 +2603,7 @@ bool virDomainHasDiskMirror(virDomainObjPtr vm);
 
 int virDomainNetFindIdx(virDomainDefPtr def, virDomainNetDefPtr net);
 virDomainNetDefPtr virDomainNetFind(virDomainDefPtr def, const char *device);
+bool virDomainHasNet(virDomainDefPtr def, virDomainNetDefPtr net);
 int virDomainNetInsert(virDomainDefPtr def, virDomainNetDefPtr net);
 virDomainNetDefPtr virDomainNetRemove(virDomainDefPtr def, size_t i);
 void virDomainNetRemoveHostdev(virDomainDefPtr def, virDomainNetDefPtr net);
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index b5fe88cb940ce48bda471df5a53bdb99e405a776..63e378bf0a7acf59b4565bee2a5a82e115c2cde6 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -293,6 +293,7 @@ virDomainGraphicsTypeToString;
 virDomainGraphicsVNCSharePolicyTypeFromString;
 virDomainGraphicsVNCSharePolicyTypeToString;
 virDomainHasDiskMirror;
+virDomainHasNet;
 virDomainHostdevCapsTypeToString;
 virDomainHostdevDefAlloc;
 virDomainHostdevDefClear;