feat(vm_provision_mixin): implement get_network_targets()

Filters _get_node_network() to bridge/OVSBridge types only (excludes physical
NICs, bonds), plus SDN vnets from _get_sdn_vnets(). vlan_aware: Linux bridge
reflects its bridge_vlan_aware config flag; OVS bridge always true; SDN vnet
always false (VLAN already fixed by the vnet's zone/tag).

4 new tests: bridge/vnet filtering, Linux bridge vlan_aware flag, OVS bridge
always vlan_aware, SDN vnet never vlan_aware. All 15 tests in the file pass.

napalm_proxmox/vm_provision_mixin.py

@@ -8,7 +8,7 @@ import yaml
 from typing import Any, Dict, List
 from urllib.parse import quote
 
-from napalm_device_types.models import VMProvisionResultDict, VMStatusDict
+from napalm_device_types.models import NetworkTargetDict, VMProvisionResultDict, VMStatusDict
 
 _logger = logging.getLogger(__name__)
 
@@ -387,3 +387,34 @@ class ProxmoxVMProvisionMixin:
         except Exception as e:
             _logger.exception(f"Error getting status for VM {vmid}: {e}")
             raise RuntimeError(f"Failed to get VM {vmid} status: {e}")
+
+    def get_network_targets(self) -> List[NetworkTargetDict]:
+        """
+        List selectable network targets (bridges + SDN vnets) for a new VM's NIC.
+
+        Excludes physical NICs, bonds, and other non-bridge interface types —
+        those are never valid ``NICConfigDict.bridge`` values on Proxmox.
+        """
+        targets: List[NetworkTargetDict] = []
+
+        for iface in self._get_node_network():
+            iface_type = iface.get("type")
+            name = iface.get("iface", "")
+            if not name:
+                continue
+
+            if iface_type == "bridge":
+                vlan_aware = bool(int(iface.get("bridge_vlan_aware", 0) or 0))
+                targets.append({"name": name, "kind": "bridge", "vlan_aware": vlan_aware})
+            elif iface_type == "OVSBridge":
+                # OVS bridges tag per-port regardless of a dedicated "VLAN aware" setting.
+                targets.append({"name": name, "kind": "bridge", "vlan_aware": True})
+
+        for vnet in self._get_sdn_vnets():
+            name = vnet.get("vnet", "")
+            if not name:
+                continue
+            # A vnet's VLAN is already fixed by its zone/tag — no separate vlan_tag applies.
+            targets.append({"name": name, "kind": "vnet", "vlan_aware": False})
+
+        return targets