From cd0208f3fc34a5d984eeb0d5006da39e8bf4f758 Mon Sep 17 00:00:00 2001
From: Tom Alexander <tom@fizz.buzz>
Date: Sun, 13 Oct 2024 22:02:59 -0400
Subject: [PATCH] Add a script to get the next hop in a route.

I never remember the incantation, and its slightly different between FreeBSD and Linux so I am adding this script essentially as a note.
---
 ansible/roles/network/files/next_hop_freebsd.bash |  7 +++++++
 ansible/roles/network/files/next_hop_linux.bash   |  7 +++++++
 ansible/roles/network/tasks/freebsd.yaml          | 11 +++++++++++
 ansible/roles/network/tasks/linux.yaml            | 11 +++++++++++
 4 files changed, 36 insertions(+)
 create mode 100644 ansible/roles/network/files/next_hop_freebsd.bash
 create mode 100644 ansible/roles/network/files/next_hop_linux.bash

diff --git a/ansible/roles/network/files/next_hop_freebsd.bash b/ansible/roles/network/files/next_hop_freebsd.bash
new file mode 100644
index 0000000..367e67f
--- /dev/null
+++ b/ansible/roles/network/files/next_hop_freebsd.bash
@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+#
+set -euo pipefail
+IFS=$'\n\t'
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+
+exec route get "${@}"
diff --git a/ansible/roles/network/files/next_hop_linux.bash b/ansible/roles/network/files/next_hop_linux.bash
new file mode 100644
index 0000000..4b72c84
--- /dev/null
+++ b/ansible/roles/network/files/next_hop_linux.bash
@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+#
+set -euo pipefail
+IFS=$'\n\t'
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+
+exec ip route get "${@}"
diff --git a/ansible/roles/network/tasks/freebsd.yaml b/ansible/roles/network/tasks/freebsd.yaml
index ed44588..3d9a1d6 100644
--- a/ansible/roles/network/tasks/freebsd.yaml
+++ b/ansible/roles/network/tasks/freebsd.yaml
@@ -75,3 +75,14 @@
   file:
     path: "/etc/rc.conf.d/ip6addrctl"
     state: absent
+
+- name: Install scripts
+  copy:
+    src: "files/{{ item.src }}"
+    dest: "{{ item.dest }}"
+    mode: 0755
+    owner: root
+    group: wheel
+  loop:
+    - src: next_hop_freebsd.bash
+      dest: /usr/local/bin/next_hop
diff --git a/ansible/roles/network/tasks/linux.yaml b/ansible/roles/network/tasks/linux.yaml
index 67b2cc1..297c7d2 100644
--- a/ansible/roles/network/tasks/linux.yaml
+++ b/ansible/roles/network/tasks/linux.yaml
@@ -58,3 +58,14 @@
     - iwd.service
     # - systemd-networkd.service
     - systemd-resolved.service
+
+- name: Install scripts
+  copy:
+    src: "files/{{ item.src }}"
+    dest: "{{ item.dest }}"
+    mode: 0755
+    owner: root
+    group: wheel
+  loop:
+    - src: next_hop_linux.bash
+      dest: /usr/local/bin/next_hop