diff --git a/nix/kexec-installer/module.nix b/nix/kexec-installer/module.nix
index 3f737b6..c9e7f28 100644
--- a/nix/kexec-installer/module.nix
+++ b/nix/kexec-installer/module.nix
@@ -36,10 +36,9 @@ in {
 
     # save the networking config for later use
     if type -p ip &>/dev/null; then
-      ip -4 --json addr > addrs-v4.json
-      ip -4 --json addr > addrs-v6.json
+      ip --json addr > addrs.json
 
-      ip -6 --json route > routes-v4.json
+      ip -4 --json route > routes-v4.json
       ip -6 --json route > routes-v6.json
     else
       echo "Skip saving static network addresses because no iproute2 binary is available." 2>&1
@@ -100,12 +99,11 @@ in {
     wantedBy = [ "multi-user.target" ];
 
     serviceConfig.ExecStart = [
-      "${restoreNetwork} /root/network/addrs-v4.json /root/network/addrs-v6.json /root/network/routes-v4.json /root/network/routes-v6.json"
+      "${restoreNetwork} /root/network/addrs.json /root/network/routes-v4.json /root/network/routes-v6.json"
     ];
 
     unitConfig.ConditionPathExists = [
-      "/root/network/addrs-v4.json"
-      "/root/network/addrs-v6.json"
+      "/root/network/addrs.json"
       "/root/network/routes-v4.json"
       "/root/network/routes-v6.json"
     ];
diff --git a/nix/kexec-installer/restore_routes.py b/nix/kexec-installer/restore_routes.py
index 9eb1f0a..152ccbe 100644
--- a/nix/kexec-installer/restore_routes.py
+++ b/nix/kexec-installer/restore_routes.py
@@ -85,28 +85,25 @@ IPv6AcceptRA = yes
 
 
 def main() -> None:
-    if len(sys.argv) < 5:
+    if len(sys.argv) < 4:
         print(
-            f"USAGE: {sys.argv[0]} addresses-v4 addresses-v6 routes-v4 routes-v6 [networkd-directory]",
+            f"USAGE: {sys.argv[0]} addresses routes-v4 routes-v6 [networkd-directory]",
             file=sys.stderr,
         )
         sys.exit(1)
 
     with open(sys.argv[1]) as f:
-        v4_addresses = json.load(f)
+        addresses = json.load(f)
     with open(sys.argv[2]) as f:
-        v6_addresses = json.load(f)
-    with open(sys.argv[3]) as f:
         v4_routes = json.load(f)
-    with open(sys.argv[4]) as f:
+    with open(sys.argv[3]) as f:
         v6_routes = json.load(f)
 
-    if len(sys.argv) >= 5:
-        networkd_directory = Path(sys.argv[5])
+    if len(sys.argv) >= 4:
+        networkd_directory = Path(sys.argv[4])
     else:
         networkd_directory = Path("/etc/systemd/network")
 
-    addresses = v4_addresses + v6_addresses
     relevant_interfaces = filter_interfaces(addresses)
     relevant_routes = filter_routes(v4_routes) + filter_routes(v6_routes)