The reason that the trap was generated. srcIpNotFound(1) indicates
that the Sender IP address of the ARP packet was not found in the
DHCP Snooping database. badVLAN(2) indicates that the VLAN of the
DHCP Snooping binding entry associated with the Sender IP address
of the ARP packet does not match the VLAN that the ARP packet was
received on. badPort(3) indicates that the port of the DHCP
Snooping binding entry associated with the Sender IP address of the
ARP packet does not match the port that the ARP packet was received
on. srcIpNotAllocated(4) indicates that the CHADDR of the DHCP
Snooping binding entry associated with the Sender IP address of
the ARP packet does not match the Source MAC and/or the ARP source
MAC of the ARP packet.