NetStress-NG
NetStress is a DDoS and network stress testing tool.
... Flood with static source ip address
FIN Flood with random source address
FIN Flood with fragmented packets
UDP Flood Attacs
Static source port udp flood
UDP flood with random source port
UDP Flood with static source ip address
UDP Flood with random source address
UDP Flood with fragmented packets
ICMP Flood
ICMP Flood with all options random(source ip, icmp type, code)
HTTP Flood
...
More info: http://sf.net/p/netstressng/wiki/Home/