From 46ff27447d2e58bb0df055edb14b2bfe2b7de2b2 Mon Sep 17 00:00:00 2001
From: Matthias Kovatsch <github@kovatsch.net>
Date: Fri, 31 Oct 2025 11:24:08 +0000
Subject: [PATCH] fix(binding-coap): include IPv6 when no address specified

This is just a strawman hotfix to start the work on fixing IPv6 support for the CoAP server. Untested on IPv4-only machines and not considering the `net.ipv6.bindv6only` sysctl parameter (depends on the expectation of the user).
---
 packages/binding-coap/src/coap-server.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/binding-coap/src/coap-server.ts b/packages/binding-coap/src/coap-server.ts
index d31acfa72..dff6656ed 100644
--- a/packages/binding-coap/src/coap-server.ts
+++ b/packages/binding-coap/src/coap-server.ts
@@ -83,7 +83,7 @@ export default class CoapServer implements ProtocolServer {
 
     constructor(config?: CoapServerConfig) {
         this.port = config?.port ?? 5683;
-        this.address = config?.address;
+        this.address = config?.address ?? "::";
 
         // WoT-specific content formats
         registerFormat(ContentSerdes.JSON_LD, 2100);