Expand a comment (extra information taken from tcpdump's equivalent comment).

diff --git a/pcap-int.h b/pcap-int.h
index 61f38bfa3f7bd4294f56fc6e0e6d7add86f765aa..5a20444617a9d8d061ddf9d1ff7ae06815145b26 100644 (file)
--- a/pcap-int.h
+++ b/pcap-int.h
@@ -97,7 +97,9 @@ extern CRITICAL_SECTION g_PcapCompileCriticalSection;
  * and
  *
  *    2) small enough not to cause attempts to allocate huge amounts of
- *       memory.
+ *       memory; some applications might use the snapshot length in a
+ *       savefile header to control the size of the buffer they allocate,
+ *       so a size of, say, 2^31-1 might not work well.
  *
  * We don't enforce this in pcap_set_snaplen(), but we use it internally.
  */