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-rw-r--r--sys/netinet/ip_icmp.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/sys/netinet/ip_icmp.c b/sys/netinet/ip_icmp.c
index 98aeee8..4f664bf 100644
--- a/sys/netinet/ip_icmp.c
+++ b/sys/netinet/ip_icmp.c
@@ -624,6 +624,7 @@ icmp_reflect(struct mbuf *m)
if (IN_MULTICAST(ntohl(ip->ip_src.s_addr)) ||
IN_EXPERIMENTAL(ntohl(ip->ip_src.s_addr)) ||
+ IN_LOOPBACK(ntohl(ip->ip_src.s_addr)) ||
IN_ZERONET(ntohl(ip->ip_src.s_addr)) ) {
m_freem(m); /* Bad return address */
icmpstat.icps_badaddr++;
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