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Fix socket default interface ID only being used partially #15370

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Merged
merged 1 commit into from
Jan 16, 2023
Merged

Fix socket default interface ID only being used partially #15370

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11 changes: 10 additions & 1 deletion connectivity/nanostack/sal-stack-nanostack/source/Core/ns_socket.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1570,8 +1570,17 @@ struct protocol_interface_info_entry *socket_interface_determine(const socket_t
}
}

/* Try a routing table entry for greater-than-realm scope */
/* For greater-than-realm scope, use default interface if a default interface ID */
/* has been set (e.g. using setsockopt), else try a routing table entry */
if (addr_ipv6_scope(buf->dst_sa.address, NULL) > IPV6_SCOPE_REALM_LOCAL) {
if (socket_ptr->default_interface_id != -1) {
cur_interface = protocol_stack_interface_info_get_by_id(socket_ptr->default_interface_id);
if (cur_interface) {
return cur_interface;
} else {
return NULL;
}
}
if (ipv6_buffer_route(buf)) {
return buf->interface;
}
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