diff --git a/rocky-9/data/files/nm-eth0.conf b/rocky-9/data/files/nm-eth0.conf
new file mode 100644
index 0000000..a873fb5
--- /dev/null
+++ b/rocky-9/data/files/nm-eth0.conf
@@ -0,0 +1,4 @@
+[connection-eth0]
+match-device=interface-name:eth0
+ipv4.route-metric=0
+ipv6.route-metric=0
diff --git a/rocky-9/data/init.ks.pkrtpl.hcl b/rocky-9/data/init.ks.pkrtpl.hcl
index af3dac2..df1d592 100644
--- a/rocky-9/data/init.ks.pkrtpl.hcl
+++ b/rocky-9/data/init.ks.pkrtpl.hcl
@@ -166,6 +166,11 @@ ${files_hcloud_ssh_keys_service}
 EOF
 
 systemctl enable hcloud-ssh-keys.service
+
+cat >/etc/NetworkManager/conf.d/eth0.conf <<\EOF
+${files_hcloud_nm_eth0}
+EOF
+chmod 644 /etc/NetworkManager/conf.d/eth0.conf
 %end
 
 ### Reboot after the installation is complete.
diff --git a/rocky-9/server.pkr.hcl b/rocky-9/server.pkr.hcl
index a0c33a7..a345327 100644
--- a/rocky-9/server.pkr.hcl
+++ b/rocky-9/server.pkr.hcl
@@ -20,6 +20,7 @@ locals {
     files_hetznercloud_default_init = file("${abspath(path.root)}/data/files/90-hetznercloud.cfg")
     files_hetznercloud_ds_init      = file("${abspath(path.root)}/data/files/92-hetznercloud-ds.cfg")
     files_hetznercloud_init         = file("${abspath(path.root)}/data/files/93-hetznercloud.cfg")
+    files_hcloud_nm_eth0            = file("${abspath(path.root)}/data/files/nm-eth0.conf")
   })
   build_id = "${uuidv4()}"
   build_labels = {