extmod/modlwip: Fix IGMP address type when IPv6 is enabled.

This was missed in 628abf8. The the bug was that, when IPv6 is enabled, the `sizeof(ip_addr_t)` is much larger than IPv4 size, which is what's needed for IGMP addressing. Fixes issue micropython#16100. Signed-off-by: Damien George <[email protected]>
openmv · Nov 18, 2024 · 6f32768 · 6f32768
1 parent a7d3bc2
commit 6f32768
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/extmod/modlwip.c b/extmod/modlwip.c
@@ -1432,7 +1432,7 @@ static mp_obj_t lwip_socket_setsockopt(size_t n_args, const mp_obj_t *args) {
         case IP_DROP_MEMBERSHIP: {
             mp_buffer_info_t bufinfo;
             mp_get_buffer_raise(args[3], &bufinfo, MP_BUFFER_READ);
-            if (bufinfo.len != sizeof(ip_addr_t) * 2) {
+            if (bufinfo.len != sizeof(MP_IGMP_IP_ADDR_TYPE) * 2) {
                 mp_raise_ValueError(NULL);
             }