D31327.diff
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	diff --git a/sys/net/debugnet_inet.c b/sys/net/debugnet_inet.c
	--- a/sys/net/debugnet_inet.c
	+++ b/sys/net/debugnet_inet.c
	@@ -86,6 +86,9 @@
	struct mbuf *m;
	unsigned short hlen;

	+ if (pcb->dp_state < DN_STATE_HAVE_GW_MAC)
	+ return;
	+
	/* IP processing. */
	m = *mb;
	if (m->m_pkthdr.len < sizeof(struct ip)) {
	@@ -347,13 +350,19 @@
	" server or gateway)\n", buf);
	return;
	}
	+ if (pcb->dp_state >= DN_STATE_HAVE_GW_MAC) {
	+ inet_ntoa_r(isaddr, buf);
	+ DNETDEBUG("ignoring server ARP reply from %s (already"
	+ " have gateway address)\n", buf);
	+ return;
	+ }
	+ MPASS(pcb->dp_state == DN_STATE_INIT);
	memcpy(pcb->dp_gw_mac.octet, ar_sha(ah),
	min(ah->ar_hln, ETHER_ADDR_LEN));

	DNETDEBUG("got server MAC address %6D\n",
	pcb->dp_gw_mac.octet, ":");

	- MPASS(pcb->dp_state == DN_STATE_INIT);
	pcb->dp_state = DN_STATE_HAVE_GW_MAC;
	return;
	}