--- zzzz-none-000/linux-4.9.279/net/ipv6/ip6_input.c	2021-08-08 06:38:54.000000000 +0000
+++ puma7-arm-6591-750/linux-4.9.279/net/ipv6/ip6_input.c	2023-02-08 10:58:16.000000000 +0000
@@ -18,6 +18,11 @@
  *	Mitsuru KANDA @USAGI and
  *	YOSHIFUJI Hideaki @USAGI: Remove ipv6_parse_exthdrs().
  */
+/*
+ * Includes Intel Corporation's changes/modifications dated: 2014, 2018.
+ * Changed/modified portions - Copyright (c) 2014-2018, Intel Corporation.
+ */
+
 
 #include <linux/errno.h>
 #include <linux/types.h>
@@ -195,6 +200,19 @@
 		}
 	}
 
+#ifdef CONFIG_INTEL_NS_DEVICE_FILTER
+/* filter neighbour solicit packets not targeted to the device*/
+    if (hdr->nexthdr == IPPROTO_ICMPV6)
+    {
+        struct icmp6hdr *icmpv6_hdr;
+        icmpv6_hdr = icmp6_hdr(skb);
+        if (icmpv6_hdr->icmp6_type == NDISC_NEIGHBOUR_SOLICITATION)
+        {
+			if (intel_ns_handler (skb->dev,&(hdr->daddr),IFA_F_TENTATIVE) == 0)
+				goto drop; 	 
+        }
+    }
+#endif
 	rcu_read_unlock();
 
 	/* Must drop socket now because of tproxy. */