ndt-users list created

Hi, 

I have some problems with NDT, but the main one reffer checking middleboxes. 
NDT work fine but sometimes during checking middleboxes web100clt (and also 
the java applet) return a "Protocol error!". Test was perform on localhost 
and also connecting by another pc and results it's the same. If I use 
web100clt with the '--disablemid' option, all (quite all...) works perfectly. 
NDT version is 3.3.19 on a Scientific Linux CERN 4.4 with a kernel 2.6.10 
web100 patched. The userland library is 1.6 with the patch for IPv4 addresses 
mapped on IPv6. Follow up test results with '--disablemid' enabled:

 Testing network path for configuration and performance problems  --  Using 
IPv4 address
checking for firewalls . . . . . . . . . . . . . . . . . . .  Done
running 10s outbound test (client to server) . . . . .  982.12 Mb/s
running 10s inbound test (server to client) . . . . . . 424.24 Mb/s
Server unable to determine bottleneck link type.
Server 'xxxxxxxxxxxxxxx' is not behind a firewall. [Connection to the 
ephemeral port was successful]
Client is not behind a firewall. [Connection to the ephemeral port was 
successful]

        ------  Web100 Detailed Analysis  ------

Web100 reports the Round trip time = 0.29 msec;the Packet size = 16384 Bytes; 
and 
No packet loss - but packets arrived out-of-order 0.02% of the time.
This connection is receiver limited 99.68% of the time.

    Web100 reports TCP negotiated the optional Performance Settings to: 
RFC 2018 Selective Acknowledgment: ON
RFC 896 Nagle Algorithm: ON
RFC 3168 Explicit Congestion Notification: OFF
RFC 1323 Time Stamping: ON
RFC 1323 Window Scaling: ON; Scaling Factors - Server=2, Client=2
The theoretical network limit is 430403.47 Mbps
The NDT server has a 216 KByte buffer which limits the throughput to 5818.97 
Mbps
Your PC/Workstation has a 67 KByte buffer which limits the throughput to 
1792.41 Mbps
The network based flow control limits the throughput to 2155.17 Mbps

Client Data reports link is ' -1', Client Acks report link is ' -1'
Server Data reports link is ' -1', Server Acks report link is ' -1'
CurMSS: 16384
X_Rcvbuf: 221184
X_Sndbuf: 221184
AckPktsIn: 32393
AckPktsOut: 0
BytesRetrans: 0
CongAvoid: 0
CongestionOverCount: 0
CongestionSignals: 0
CountRTT: 32387
CurCwnd: 32768
CurRTO: 201
CurRwinRcvd: 17780
CurRwinSent: 32768
CurSsthresh: 2147483647
DSACKDups: 0
DataBytesIn: 0
DataBytesOut: 532361884
DataPktsIn: 0
DataPktsOut: 32392
DupAcksIn: 7
ECNEnabled: 0
FastRetran: 0
MaxCwnd: 81920
MaxMSS: 16384
MaxRTO: 211
MaxRTT: 40
MaxRwinRcvd: 68132
MaxRwinSent: 32768
MaxSsthresh: 0
MinMSS: 16364
MinRTO: 201
MinRTT: 0
MinRwinRcvd: 1072
MinRwinSent: 32768
NagleEnabled: 1
OtherReductions: 2
PktsIn: 32393
PktsOut: 32392
PktsRetrans: 0
RcvWinScale: 2
SACKEnabled: 3
SACKsRcvd: 0
SendStall: 0
SlowStart: 3
SampleRTT: 0
SmoothedRTT: 1
SndWinScale: 2
SndLimTimeRwin: 9996291
SndLimTimeCwnd: 561
SndLimTimeSender: 31951
SndLimTransRwin: 2
SndLimTransCwnd: 1
SndLimTransSender: 1
SndLimBytesRwin: 532230552
SndLimBytesCwnd: 82180
SndLimBytesSender: 49152
SubsequentTimeouts: 0
SumRTT: 9406
Timeouts: 0
TimestampsEnabled: 1
WinScaleRcvd: 2
WinScaleSent: 2
DupAcksOut: 0
StartTimeUsec: 789820
Duration: 10030003
c2sData: -1
c2sAck: -1
s2cData: -1
s2cAck: -1
half_duplex: 0
link: 100
congestion: 0
bad_cable: 0
mismatch: 0
spd: 424.67
bw: 430403.47
loss: 0.000001000
avgrtt: 0.29
waitsec: 0.00
timesec: 10.00
order: 0.0002
rwintime: 0.9968
sendtime: 0.0032
cwndtime: 0.0001
rwin: 0.5198
swin: 1.6875
cwin: 0.6250
rttsec: 0.000290
Sndbuf: 221184
aspd: 0.00000
CWND-Limited: 0.00

And now the second problem... 
"Server unable to determine bottleneck link type." Searching in some previous 
articles in mailing list i found something about it (eth0 is the only network 
device and enter properly in promiscuous mode) but not work. Any idea?

Regards,

Claudio.
(i'm sorry for my english...)