diff --git a/sys/netinet/tcp_subr.c b/sys/netinet/tcp_subr.c
--- a/sys/netinet/tcp_subr.c
+++ b/sys/netinet/tcp_subr.c
@@ -2314,6 +2314,7 @@
 	 * which may match an IPv4-mapped IPv6 address.
 	 */
 	inp->inp_ip_ttl = V_ip_defttl;
+	inp->inp_ppcb = tp;
 #ifdef TCPHPTS
 	/*
 	 * If using hpts lets drop a random number in so