From 77afc5e63758e31bc89e584e9955bd8f3ba55370 Mon Sep 17 00:00:00 2001
From: Marian Buschsieweke <marian.buschsieweke@ovgu.de>
Date: Tue, 23 May 2023 22:04:12 +0200
Subject: [PATCH] sys/posix/sockets: set sin6_scope_id in _ep_to_sockaddr()

Fixes https://github.com/RIOT-OS/RIOT/issues/19486
---
 sys/posix/sockets/posix_sockets.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sys/posix/sockets/posix_sockets.c b/sys/posix/sockets/posix_sockets.c
index 437bccbfe1..3933f70a30 100644
--- a/sys/posix/sockets/posix_sockets.c
+++ b/sys/posix/sockets/posix_sockets.c
@@ -232,6 +232,7 @@ static int _ep_to_sockaddr(const struct _sock_tl_ep *ep,
             in6_addr->sin6_family = AF_INET6;
             memcpy(&in6_addr->sin6_addr, &ep->addr.ipv6, sizeof(ep->addr.ipv6));
             in6_addr->sin6_port = htons(ep->port);
+            in6_addr->sin6_scope_id = ep->netif;
             return sizeof(struct sockaddr_in6);
         }
 #endif