From b5fa5f0b82483cdb04c811a7ef044dbf0eef2a52 Mon Sep 17 00:00:00 2001
From: Aminda Suomalainen <suomalainen+git@mikaela.info>
Date: Sat, 11 Mar 2023 15:43:53 +0200
Subject: [PATCH] bash/dns-ecs-debug.bash: initial commit

---
 bash/dns-ecs-debug.bash | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100755 bash/dns-ecs-debug.bash

diff --git a/bash/dns-ecs-debug.bash b/bash/dns-ecs-debug.bash
new file mode 100755
index 0000000..96c3404
--- /dev/null
+++ b/bash/dns-ecs-debug.bash
@@ -0,0 +1,23 @@
+#!/usr/bin/env bash
+
+# This script just digs domains that return information the authoritative
+# nameserver receives which is resolver's IP and ECS if the server in
+# question sends that.
+# $@ takes all parameters so another DNS server can be specified
+# e.g. ./dns-ecs-debug.bash @9.9.9.11
+
+echo "Google $@"
+dig +short TXT o-o.myaddr.l.google.com. "$@"
+echo ""
+
+echo "Akamai dualstack $@"
+dig +short TXT whoami.ds.akahelp.net. "$@"
+echo ""
+
+echo "Akamai IPv6 $@"
+dig +short TXT whoami.ipv6.akahelp.net. "$@"
+echo ""
+
+echo "Akamai IPv4 $@"
+dig +short TXT whoami.ipv4.akahelp.net. "$@"
+echo ""