D7251.1794250021.diff
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	Index: head/sys/netinet/tcp_subr.c
	===================================================================
	--- head/sys/netinet/tcp_subr.c
	+++ head/sys/netinet/tcp_subr.c
	@@ -1950,11 +1950,7 @@
	else if (V_icmp_may_rst && (cmd == PRC_UNREACH_ADMIN_PROHIB \|\|
	cmd == PRC_UNREACH_PORT \|\| cmd == PRC_TIMXCEED_INTRANS) && ip)
	notify = tcp_drop_syn_sent;
	- else if (PRC_IS_REDIRECT(cmd)) {
	- /* signal EHOSTDOWN, as it flushes the cached route */
	- in_pcbnotifyall(&V_tcbinfo, faddr, EHOSTDOWN, notify);
	- return;
	- }
	+
	/*
	* Hostdead is ugly because it goes linearly through all PCBs.
	* XXX: We never get this from ICMP, otherwise it makes an
	@@ -1975,7 +1971,12 @@
	INP_INFO_RLOCK(&V_tcbinfo);
	inp = in_pcblookup(&V_tcbinfo, faddr, th->th_dport, ip->ip_src,
	th->th_sport, INPLOOKUP_WLOCKPCB, NULL);
	- if (inp != NULL) {
	+ if (inp != NULL && PRC_IS_REDIRECT(cmd)) {
	+ /* signal EHOSTDOWN, as it flushes the cached route */
	+ inp = (*notify)(inp, EHOSTDOWN);
	+ if (inp != NULL)
	+ INP_WUNLOCK(inp);
	+ } else if (inp != NULL) {
	if (!(inp->inp_flags & INP_TIMEWAIT) &&
	!(inp->inp_flags & INP_DROPPED) &&
	!(inp->inp_socket == NULL)) {