diff --git a/roles/server_iso/README.md b/roles/server_iso/README.md
index 6eb9773..41d6b73 100644
--- a/roles/server_iso/README.md
+++ b/roles/server_iso/README.md
@@ -10,9 +10,9 @@ Create an Oracle Linux 9 ISO for automatic server installation.
 |src_iso_checksum |str | no | sha256:a782e8c78a629ab1c19fcb32e76d3b81c7ef1b04060a0465253c103686339f3a | Checksum of downloaded source installation medium |
 |src_iso_label |str | no | OL-9-0-0-BaseOS-x86_64 | Volume ID of installation medium. Could be displayed by `xorriso -indev {{ role_path }}/files/OracleLinux-R9-U0-x86_64-boot-uek.iso -toc` |
 |reboot_after_installation |bool | no | False | Automatic reboot after installation. |
-|gateway |str | no | {{ (((ansible_host + '/255.255.255.0') \| ansible.utils.ipaddr('network') \| ansible.utils.ipaddr('int'))+1) \| string \| ansible.utils.ipaddr}} | IPv4 default gateway address. This will only be used when ansible_host is a IP address. |
-|nameserver |str | no | {{ (((ansible_host + '/255.255.255.0') \| ansible.utils.ipaddr('network') \| ansible.utils.ipaddr('int'))+1) \| string \| ansible.utils.ipaddr}} | IPv4 nameserver address. This will only be used when ansible_host is a IP address. |
-|netmask |str | no | 255.255.255.0 | IPv4 subnet mask. This will only be used when ansible_host is a IP address. |
+|gateway |str | no |  | IPv4 default gateway address. This will only be used when ansible_host is a IP address. |
+|nameserver |str | no |  | IPv4 nameserver address. This will only be used when ansible_host is a IP address. |
+|netmask |str | no |  | IPv4 subnet mask. This will only be used when ansible_host is a IP address. |
 |ssh_keys |list[str] | no |  | List of ssh public keys that will be added to .ssh/authorized_keys |
 |iso_path |str | yes |  | Storage location for the created ISO |
 <!-- END Argument Specs -->
diff --git a/roles/server_iso/meta/argument_specs.yml b/roles/server_iso/meta/argument_specs.yml
index 6e65d72..724e024 100644
--- a/roles/server_iso/meta/argument_specs.yml
+++ b/roles/server_iso/meta/argument_specs.yml
@@ -35,17 +35,14 @@ argument_specs:
         type: "bool"
 
       gateway:
-        default: "{{ (((ansible_host + '/255.255.255.0') | ansible.utils.ipaddr('network') | ansible.utils.ipaddr('int'))+1) | string | ansible.utils.ipaddr}}"
         description: "IPv4 default gateway address. This will only be used when ansible_host is a IP address."
         type: "str"
 
       nameserver:
-        default: "{{ (((ansible_host + '/255.255.255.0') | ansible.utils.ipaddr('network') | ansible.utils.ipaddr('int'))+1) | string | ansible.utils.ipaddr}}"
         description: "IPv4 nameserver address. This will only be used when ansible_host is a IP address."
         type: "str"
 
       netmask:
-        default: "255.255.255.0"
         description: "IPv4 subnet mask. This will only be used when ansible_host is a IP address."
         type: "str"