From 80b381a1c6598709dc5d1633b72651b2424915ce Mon Sep 17 00:00:00 2001
From: "Sergio R. Caprile" <scaprile@cesanta.com>
Date: Wed, 3 Jun 2026 10:38:49 -0300
Subject: [PATCH] unbreak IPv6 and its tests

---
 mongoose.c        | 3 ++-
 src/net_builtin.c | 3 ++-
 test/mip_test.c   | 2 +-
 3 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/mongoose.c b/mongoose.c
index c28921d7..c8b91d25 100644
--- a/mongoose.c
+++ b/mongoose.c
@@ -8307,7 +8307,7 @@ static void rx_ndp_ra(struct mg_tcpip_if *ifp, struct pkt *pkt) {
         (void) pref_lifetime;
 
         gotprefix = true;
-        if (prefix_len != ifp->prefix || !match_prefix(prefix, ifp->prefix, ifp->prefix_len))
+        if (prefix_len != ifp->prefix_len || !match_prefix(prefix, ifp->prefix, ifp->prefix_len))
           changed = true;
       }
       opts += length;
@@ -8395,6 +8395,7 @@ static void onstate6change(struct mg_tcpip_if *ifp) {
                               (struct mg_addr *) &ip6_allrouters),
                   ifp->ip6, (uint64_t *) ip6_allrouters.addr.ip6, false,
                   ifp->mac);
+    }
     if (ifp->is_ip6_changed) {
       struct mg_connection *c;
       for (c = ifp->mgr->conns; c != NULL; c = c->next) {
diff --git a/src/net_builtin.c b/src/net_builtin.c
index 340bd2d0..de8907a9 100644
--- a/src/net_builtin.c
+++ b/src/net_builtin.c
@@ -998,7 +998,7 @@ static void rx_ndp_ra(struct mg_tcpip_if *ifp, struct pkt *pkt) {
         (void) pref_lifetime;
 
         gotprefix = true;
-        if (prefix_len != ifp->prefix || !match_prefix(prefix, ifp->prefix, ifp->prefix_len))
+        if (prefix_len != ifp->prefix_len || !match_prefix(prefix, ifp->prefix, ifp->prefix_len))
           changed = true;
       }
       opts += length;
@@ -1086,6 +1086,7 @@ static void onstate6change(struct mg_tcpip_if *ifp) {
                               (struct mg_addr *) &ip6_allrouters),
                   ifp->ip6, (uint64_t *) ip6_allrouters.addr.ip6, false,
                   ifp->mac);
+    }
     if (ifp->is_ip6_changed) {
       struct mg_connection *c;
       for (c = ifp->mgr->conns; c != NULL; c = c->next) {
diff --git a/test/mip_test.c b/test/mip_test.c
index 35f8a813..270703a8 100644
--- a/test/mip_test.c
+++ b/test/mip_test.c
@@ -83,7 +83,7 @@ static void test_statechange(void) {
 }
 #if MG_ENABLE_IPV6
 static void mif6_fn(struct mg_tcpip_if *ifp, int ev, void *ev_data) {
-  if (ev == MG_TCPIP_EV_STATE_CHANGE) {
+  if (ev == MG_TCPIP_EV_STATE6_CHANGE) {
     ASSERT(*(uint8_t *) ev_data == MG_TCPIP_STATE_REQ);
     executed = true;
   }