{
struct stat sb;
if (stat ((char *) a->pcap_file_name, &sb) != -1)
- return clib_error_return (0, "Cannot create pcap file");
+ return clib_error_return (0, "pcap file '%s' does not exist.",
+ a->pcap_file_name);
}
pi = pool_elt_at_index (pg->interfaces, a->dev_instance);