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Diffstat (limited to 'sys/netinet/tcp_seq.h')
-rw-r--r--sys/netinet/tcp_seq.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/sys/netinet/tcp_seq.h b/sys/netinet/tcp_seq.h
index aeefb209f85a..49b714ac5633 100644
--- a/sys/netinet/tcp_seq.h
+++ b/sys/netinet/tcp_seq.h
@@ -91,7 +91,7 @@ extern tcp_cc tcp_ccgen; /* global connection count */
* number in the range [0-0x3ffff] that is hard to predict.
*/
#ifndef tcp_random18
-#define tcp_random18() ((random() >> 14) & 0x3ffff)
+#define tcp_random18() (arc4random() & 0x3ffff)
#endif
#define TCP_ISSINCR (122*1024 + tcp_random18())