$OpenBSD$

From FreeBSD.

Index: src/Sniffer.h
--- src/Sniffer.h.orig
+++ src/Sniffer.h
@@ -43,7 +43,7 @@ class Sniffer (public)
 
 	// init performs some constructor-like activity. It is separate
 	// so that exceptions don't have to be thrown in the constructor.
-	void init(char *iface, char *fexp, char *test_file);
+	void init(const char *iface, char *fexp, const char *test_file);
 
 	// set the place where sniffed packets are sent for further 
 	// processing. If NULL, packets are just dropped.
