feat: enhance guest network configuration and recovery process for UVM

uvm/install.py

@@ -14,14 +14,14 @@ from pathlib import Path
 
 from .config import Settings
 from .errors import UvmError
-from .images import GuestAssets
+from .images import GUEST_NETWORK_TEMPLATE, GuestAssets
 from .integrity import load_manifest, require_checksum, sha256_file, verify_file, write_manifest
 from .state import StateStore
 from .system import CommandRunner, check_kvm, ensure_data_directories, require_root
 
 
 _UBUNTU_RELEASE = "jammy"
-_ROOTFS_RECIPE = "uvm-ubuntu-jammy-v2\n"
+_ROOTFS_RECIPE = "uvm-ubuntu-jammy-v3\n"
 _GUEST_PACKAGES = (
     "ca-certificates", "openssh-server", "sudo", "systemd-sysv", "udev",
     "dbus", "libpam-systemd", "iproute2", "iputils-ping", "curl",
@@ -383,10 +383,7 @@ class Installer:
             "etc/resolv.conf": "nameserver 1.1.1.1\nnameserver 8.8.8.8\n",
             "etc/machine-id": "",
             "etc/uvm-image": _ROOTFS_RECIPE,
-            "etc/systemd/network/10-uvm.network": (
-                "[Match]\nName=eth0\n\n[Network]\n"
-                "KeepConfiguration=static\nDHCP=no\nLinkLocalAddressing=no\nIPv6AcceptRA=no\n"
-            ),
+            "etc/systemd/network/10-uvm.network": GUEST_NETWORK_TEMPLATE,
         }
         for relative, contents in files.items():
             path = root / relative