From e8bb01b5479439263d2e1c796ab278697dca74d1 Mon Sep 17 00:00:00 2001
From: "Sergio R. Caprile" <scaprile@cesanta.com>
Date: Fri, 6 Nov 2026 09:37:02 -0300
Subject: [PATCH] per family close on IP change

---
 mongoose.c        | 4 ++--
 src/net_builtin.c | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/mongoose.c b/mongoose.c
index f466be92..17c2fb28 100644
--- a/mongoose.c
+++ b/mongoose.c
@@ -9976,7 +9976,7 @@ static void onstatechange(struct mg_tcpip_if *ifp) {
     if (ifp->is_ip_changed) {
       struct mg_connection *c;
       for (c = ifp->mgr->conns; c != NULL; c = c->next) {
-        if (!c->is_listening && !c->is_udp) c->is_closing = 1;
+        if (!c->is_listening && !c->is_udp && !c->loc.is_ip6) c->is_closing = 1;
       }
       ifp->is_ip_changed = false;
     }
@@ -10696,7 +10696,7 @@ static void onstate6change(struct mg_tcpip_if *ifp) {
     if (ifp->is_ip6_changed) {
       struct mg_connection *c;
       for (c = ifp->mgr->conns; c != NULL; c = c->next) {
-        if (!c->is_listening && !c->is_udp) c->is_closing = 1;
+        if (!c->is_listening && !c->is_udp && c->loc.is_ip6) c->is_closing = 1;
       }
       ifp->is_ip6_changed = false;
     }
diff --git a/src/net_builtin.c b/src/net_builtin.c
index 88cdd15b..97ad0271 100644
--- a/src/net_builtin.c
+++ b/src/net_builtin.c
@@ -424,7 +424,7 @@ static void onstatechange(struct mg_tcpip_if *ifp) {
     if (ifp->is_ip_changed) {
       struct mg_connection *c;
       for (c = ifp->mgr->conns; c != NULL; c = c->next) {
-        if (!c->is_listening && !c->is_udp) c->is_closing = 1;
+        if (!c->is_listening && !c->is_udp && !c->loc.is_ip6) c->is_closing = 1;
       }
       ifp->is_ip_changed = false;
     }
@@ -1144,7 +1144,7 @@ static void onstate6change(struct mg_tcpip_if *ifp) {
     if (ifp->is_ip6_changed) {
       struct mg_connection *c;
       for (c = ifp->mgr->conns; c != NULL; c = c->next) {
-        if (!c->is_listening && !c->is_udp) c->is_closing = 1;
+        if (!c->is_listening && !c->is_udp && c->loc.is_ip6) c->is_closing = 1;
       }
       ifp->is_ip6_changed = false;
     }