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diff --git a/src/modules/proto_radius/proto_radius_udp.c b/src/modules/proto_radius/proto_radius_udp.c
index 8b66f5eafcf39ed162dfa9a715022bd99c40af75..cca5cd1546cac24c0f9dd0a91087629a02d10552 100644 (file)
--- a/src/modules/proto_radius/proto_radius_udp.c
+++ b/src/modules/proto_radius/proto_radius_udp.c
@@ -231,11 +231,16 @@ static ssize_t mod_read(void *instance, void **packet_ctx, fr_time_t **recv_time
                             &address.src_ipaddr, &address.src_port,
                             &address.dst_ipaddr, &address.dst_port,
                             &address.if_index, &timestamp);
-       if (data_size <= 0) {
-               DEBUG2("proto_radius_udp got read error %zd", data_size);
+       if (data_size < 0) {
+               DEBUG2("proto_radius_udp got read error %zd: %s", data_size, fr_strerror());
                return data_size;
        }
 
+       if (!data_size) {
+               DEBUG2("proto_radius_udp got no data: ignoring");
+               return 0;
+       }
+
        packet_len = data_size;
 
        if (data_size < 20) {