Added exception handler to core.py for when IPv6 packets are processe…

…d that do not have fragmentation flags set in their headers.
USArmyResearchLab · May 1, 2024 · d7b9f0b · d7b9f0b
1 parent f7dd262
commit d7b9f0b
Showing 1 changed file with 7 additions and 3 deletions.
diff --git a/dshell/core.py b/dshell/core.py
@@ -902,9 +902,13 @@ def __init__(self, pktlen, packet: pypacker.Packet, timestamp: int, frame=0):
                 ieee80211_p = layer
             elif ip_p is None and isinstance(layer, (ip.IP, ip6.IP6)):
                 ip_p = layer
-                if ip_p.flags & 0x1 and ip_p.offset > 0:
-                    # IP fragmentation, break all further layer processing
-                    break
+                try:
+                    if ip_p.flags & 0x1 and ip_p.offset > 0:
+                        # IP fragmentation, break all further layer processing
+                        break
+                except AttributeError:
+                    # IPv6 does not always have flags header field set
+                     pass
             elif tcp_p is None and isinstance(layer, tcp.TCP):
                 tcp_p = layer
             elif udp_p is None and isinstance(layer, udp.UDP):