Imported old code from MOBISEND ANR project providing implementation for

various IPv6 Neighbor Discovery attacks referenced in RFC 3756 (IPv6
Neighbor Discovery (ND) Trust Models and Threats). Integration work in
recent version and associated tests done by Guillaume!

scapy/utils6.py

@@ -648,6 +648,16 @@ def in6_isincluded(addr, prefix, plen):
     zero = inet_pton(socket.AF_INET6, prefix)
     return zero == in6_and(temp, pref)
 
+def in6_isllsnmaddr(str):
+    """
+    Return True if provided address is a link-local solicited node
+    multicast address, i.e. belongs to ff02::1:ff00:0/104. False is
+    returned otherwise.
+    """
+    temp = in6_and("\xff"*13+"\x00"*3, inet_pton(socket.AF_INET6, str))
+    temp2 = '\xff\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\xff\x00\x00\x00'
+    return temp == temp2
+
 def in6_isdocaddr(str):
     """
     Returns True if provided address in printable format belongs to