New posts and updates

.prettierignore

@@ -0,0 +1 @@
+_posts/*.md

_config.yml

@@ -61,6 +61,7 @@ version: v1.2.0
 kramdown:
   # Use GitHub flavored markdown, including triple backtick fenced code blocks
   input: GFM
+
   # Jekyll 3 and GitHub Pages now only support rouge for syntax highlighting
   syntax_highlighter: rouge
   syntax_highlighter_opts:

_posts/2024-5-11-testing-dhcp-with-bats-and-docker.md

@@ -0,0 +1,48 @@
+---
+layout: post
+title: Testing DHCP with Bats and Docker!
+---
+
+[Official KEA Docker](https://gitlab.isc.org/isc-projects/kea-docker)
+
+[Git Repo](https://github.com/Qwiko/dhcp-bats-docker)
+
+bats test-file dhcp-docker-tests.bats
+{% highlight json %}
+function docker_udhcpc() {
+    docker compose -f test/test-docker-compose.yaml exec -it busybox udhcpc -q -B -v -O bootfile -n -q -V $1
+}
+
+@test "test vendor: unknown" {
+    run docker_udhcpc unknown_vendor
+    [ "$status" -eq 1 ]
+}
+
+@test "test vendor: ciscopnp" {
+    run docker_udhcpc ciscopnp
+    [ "$status" -eq 0 ]
+    [ "${lines[-1]}" = "http://10.10.10.10/ios/ztp.py" ]
+}
+
+@test "test vendor: Arista" {
+    run docker_udhcpc Arista
+    [ "$status" -eq 0 ]
+    [ "${lines[-1]}" = "http://10.10.10.10/eos/ztp.j2" ]
+}
+
+@test "test vendor: arista" {
+    run docker_udhcpc arista
+    [ "$status" -eq 0 ]
+    [ "${lines[-1]}" = "http://10.10.10.10/eos/ztp.j2" ]
+}
+{% endhighlight %}
+
+Running the tests
+{% highlight bash %}
+$ bats test
+dhcp-docker-tests.bats
+ ✓ test vendor: unknown
+ ✓ test vendor: ciscopnp
+ ✓ test vendor: Arista
+ ✓ test vendor: arista
+{% endhighlight %}

_posts/2024-5-7-kea-dhcp-client-classification.md

@@ -0,0 +1,106 @@
+---
+layout: post
+title: ISC DHCP and Kea DHCP Client classification!
+---
+
+Since ISC DHCP have been discontinued since [2022](https://www.isc.org/blogs/isc-dhcp-eol/){:target="\_blank"} I was tinkering with a way to recreate common operations with client classifications used in networking.
+
+Simple example dhcpd.conf
+
+{% highlight conf %}
+class "CISCO" {
+    match if (substring(option vendor-class-identifier, 0, 5) = "cisco");
+    option bootfile-name "http://10.10.10.10/ios/ztp.py";
+}
+
+class "ARISTA" {
+    match if (substring(option vendor-class-identifier, 0, 6) = "Arista");
+    option bootfile-name "http://10.10.10.10/eos/ztp.j2";
+}
+
+subnet 10.0.0.0 netmask 255.255.255.0 {
+    option routers 10.0.0.1;
+    pool {
+        range 10.0.0.20 10.0.0.200;
+        allow members of "CISCO";
+        allow members of "ARISTA";
+    }
+}
+{% endhighlight %}
+
+Simple example of the same functionality in kea dhcp.
+{% highlight json %}
+{
+    "Dhcp4": {
+        "interfaces-config": {
+            "interfaces": [
+                "eth0"
+            ],
+        },
+        "client-classes": [
+            {
+                "name": "CISCO",
+                "test": "substring(option[60].hex,0,5) == 'cisco'",
+                "option-data": [
+                    {
+                        "name": "boot-file-name",
+                        "code": 67,
+                        "space": "dhcp4",
+                        "data": "http://10.10.10.10/ios/ztp.py"
+                    }
+                ]
+            },
+            {
+                "name": "ARISTA",
+                "test": "substring(option[60].hex,0,6) == 'Arista' or substring(option[60].hex,0,6) == 'arista'",
+                "option-data": [
+                    {
+                        "name": "boot-file-name",
+                        "code": 67,
+                        "space": "dhcp4",
+                        "data": "http://10.10.10.10/eos/ztp.j2"
+                    }
+                ]
+            },
+            {
+                "name": "AllGroups",
+                "test": "member('CISCO') or member('ARISTA')"
+            }
+        ],
+        "loggers": [
+            {
+                "name": "kea-dhcp4",
+                "output_options": [
+                    {
+                        "output": "stdout"
+                    }
+                ],
+                "severity": "INFO",
+            },
+        ],
+        "subnet4": [
+            {
+                "subnet": "10.0.0.0/24",
+                "option-data": [
+                    {
+                        "name": "routers",
+                        "code": 3,
+                        "space": "dhcp4",
+                        "data": "10.0.0.1"
+                    }
+                ],
+                "pools": [
+                    {
+                        "pool": "10.0.0.10 - 10.0.0.20",
+                        "client-class": "AllGroups"
+                    }
+                ]
+            }
+        ]
+    }
+}
+{% endhighlight %}
+
+Check out my other post about: [Testing DHCP with Bats and Docker]({% link _posts/2024-5-11-testing-dhcp-with-bats-and-docker.md %}).
+
+In a future post I will look into on commit script hooks with Kea DHCP.