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diff --git src/dns.c src/dns.c
index fe3b672..0c43985 100644
--- src/dns.c
+++ src/dns.c
@@ -223,6 +223,15 @@ static void *dns_child_loop (__attribute__((unused)) void *dummy)
pthread_sigmask (SIG_SETMASK, &sigmask, NULL);
}
+ /* Check for pcap_device, if needed */
+#ifdef __sparc64__
+ if (pcap_device == NULL)
+ {
+ ERROR ("dns plugin: Interface required");
+ return (NULL);
+ }
+#endif
+
/* Passing `pcap_device == NULL' is okay and the same as passign "any" */
DEBUG ("dns plugin: Creating PCAP object..");
pcap_obj = pcap_open_live ((pcap_device != NULL) ? pcap_device : "any",
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