Merge commit from fork

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/client/ns_turn_msg.c

@@ -1282,21 +1282,27 @@ turn_time_t stun_adjust_allocate_lifetime(turn_time_t lifetime, turn_time_t max_
 
 int stun_attr_get_type(stun_attr_ref attr) {
   if (attr) {
-    return (int)(nswap16(((const uint16_t *)attr)[0]));
+    uint16_t val;
+    memcpy(&val, attr, sizeof(val));
+    return (int)(nswap16(val));
   }
   return -1;
 }
 
 int stun_attr_get_len(stun_attr_ref attr) {
   if (attr) {
-    return (int)(nswap16(((const uint16_t *)attr)[1]));
+    uint16_t val;
+    memcpy(&val, attr + 2, sizeof(val));
+    return (int)(nswap16(val));
   }
   return -1;
 }
 
 const uint8_t *stun_attr_get_value(stun_attr_ref attr) {
   if (attr) {
-    const int len = (int)(nswap16(((const uint16_t *)attr)[1]));
+    uint16_t val;
+    memcpy(&val, attr + 2, sizeof(val));
+    const int len = (int)(nswap16(val));
     if (len < 1) {
       return NULL;
     }
@@ -1307,7 +1313,9 @@ const uint8_t *stun_attr_get_value(stun_attr_ref attr) {
 
 int stun_get_requested_address_family(stun_attr_ref attr) {
   if (attr) {
-    const int len = (int)(nswap16(((const uint16_t *)attr)[1]));
+    uint16_t raw_len;
+    memcpy(&raw_len, attr + 2, sizeof(raw_len));
+    const int len = (int)(nswap16(raw_len));
     if (len != 4) {
       return STUN_ATTRIBUTE_REQUESTED_ADDRESS_FAMILY_VALUE_INVALID;
     }