From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-xd2a.google.com (mail-io1-xd2a.google.com [IPv6:2607:f8b0:4864:20::d2a]) by mail.toke.dk (Postfix) with ESMTPS id DEB347CD462 for ; Mon, 18 Jan 2021 20:19:31 +0100 (CET) Authentication-Results: mail.toke.dk; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=JFNjR43A Received: by mail-io1-xd2a.google.com with SMTP id d13so31690223ioy.4 for ; Mon, 18 Jan 2021 11:19:31 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:subject:date:message-id:mime-version:thread-index :content-language; bh=LvTMk+gXYRggzAWKdWa91e1LF2gW4eKF9ANkTYzj81Y=; b=JFNjR43AxFU+IiKQLU1PxRpOpP97lvgFBXV9iy1RUsf2z7vj0q4EQK143e/UZa0Fxi ynyn04fhFAP52xvJXOJXoxPPq+pTNEW/PTc0Y28UIO9JGSBx/5t/+UCH4oLig9tgEpA2 CKHSHWQ49+1Ss1ZgirTUIv+f94JHS7Hvs2uVwjEYGemwalbFQe0N+wcpxCmcZZp3rp3R 8qNIz0h2HUU+wWVrQRsdkxvmy5oO5mJWhK9VGS3Pa1g9X1q569hAJVSQAf/Jp6F0pNtf Q/96VfZq3Z4ZGJhn2seOrcLjPUYLxGv8Qsv3PqNIZB1JVHnU4WFSTEmWtNkpT/4f1RKu cZ7g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id:mime-version :thread-index:content-language; bh=LvTMk+gXYRggzAWKdWa91e1LF2gW4eKF9ANkTYzj81Y=; b=lTXpa2z0OCzPgae+1NudlHQUkrf3sjf5yZ+OuYArlp70sUQNvcrnC8EPqSMnbS3eVc G6rYjNjUaOBEer2VSVYCkSyd1vV2p8s0ElRM8yFPQPln06v3yXDZ/mRS1GzNPWztlO8f wEWRhFcRsmcgaXAZ7ZKhAOBvE2ZVXfurM5ZiolOFKStJHDEB+6YcM1SDPQIuKgywo6i1 hCIbEdOKCgc9pB1cFHM0nniTWS4KYnohdL964PZ+eYLWV98RVnKM18MwRTKUtzSYJuVe LmmWt5uwrEizdkDsCfU0v3EWcLRuhK9Sl05jat1jksEQCk/Nu7WZP955IKUoJurG9nse JxLA== X-Gm-Message-State: AOAM533kri3vL69kOMsJb8wy8QmGFEhDSTVrLmKyTRFJKW04SiBhHn4X D80JI7MjpO1pR9v7IteJydeYYy4ku6c= X-Google-Smtp-Source: ABdhPJyU17xEbuuZKYMFrkiJn0ZAfRDAk9+uVEET2DZol4Hh9WZd28mQG+E5sE6U87mFFbJDdoSnWw== X-Received: by 2002:a05:6e02:1101:: with SMTP id u1mr572548ilk.292.1610997568620; Mon, 18 Jan 2021 11:19:28 -0800 (PST) Received: from DESKTOP9N211S3 ([75.9.254.211]) by smtp.gmail.com with ESMTPSA id m15sm10174963ilh.6.2021.01.18.11.19.27 for (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Mon, 18 Jan 2021 11:19:28 -0800 (PST) From: To: Date: Mon, 18 Jan 2021 13:19:26 -0600 Message-ID: <003001d6edce$d69a2340$83ce69c0$@gmail.com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0031_01D6ED9C.8C009DA0" X-Mailer: Microsoft Outlook 16.0 Thread-Index: AdbtzcwDhJMQAbNsSYCi0yP1nzxKeA== Content-Language: en-us Message-ID-Hash: HFA5734GN6XHUGBG6QBRWYYSGUQTA3AI X-Message-ID-Hash: HFA5734GN6XHUGBG6QBRWYYSGUQTA3AI X-MailFrom: jmarks2@gmail.com X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; suspicious-header X-Mailman-Version: 3.3.2 Precedence: list Subject: [Flent-users] flent: No valid data List-Id: Flent discussion list Archived-At: List-Archive: List-Help: List-Post: List-Subscribe: List-Unsubscribe: This is a multipart message in MIME format. ------=_NextPart_000_0031_01D6ED9C.8C009DA0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Dear All Some time ago, I stood up a Linux Mint VM on my windows box in which to run flent. Flent showed (of course) that I had the usual bloat. Since then, I have replaced my router with an Ubiquiti ER-4 so I could shape traffic with CAKE, getting unadulterated traffic from my VDSL modem via IP passthrough. I have pre-CAKE flent data using this router. But I can't get data after starting CAKE. The issue is that I am getting "No valid Data" from flent. The flent log is unhelpful: Program exited non-zero Command produced no valid data The command line output is a more helpful: Starting rrul test. Expected run time: 70 seconds. WARNING: Program exited non-zero. Runner class: NetperfDemoRunner Command: /usr/local/bin/netperf -P 0 -v 0 -D -0.20 -4 -Y EF,EF -H 23.226.232.80 -p 12865 -t UDP_RR -l 70 -F /dev/urandom -- -H 23.226.232.80 -k THROUGHPUT,LOCAL_CONG_CONTROL,REMOTE_CONG_CONTROL,TRANSPORT_MSS,LOCAL_TRANSP ORT_RETRANS,REMOTE_TRANSPORT_RETRANS,LOCAL_SOCKET_TOS,REMOTE_SOCKET_TOS,DIRE CTION,ELAPSED_TIME,PROTOCOL,LOCAL_SEND_SIZE,LOCAL_RECV_SIZE,REMOTE_SEND_SIZE ,REMOTE_RECV_SIZE Return code: 255 Stdout: establish control: are you sure there is a netserver listening on 23.226.232.80 at port 12865? Establish control could not establish the control connection from 0.0.0.0 port 0 address family AF_INET to 23.226.232.80 port 12865 address family AF_INET I don't know how to decipher the above failure. However, I presumed an error on my side: a misconfigured firewall or port forwarding rule on the router. But I can't find one. A tcpdump of traffic to and from the VM (below) seems to show (to my inexperienced eye) that some traffic on port 12865 is reaching the VM. But I can't tell what traffic is being blocked that would cause flent to think that there is no netserver listening. Any help would be very much appreciated! with thanks, Jeremy 12:15:25.386575 IP (tos 0x0, ttl 64, id 54256, offset 0, flags [DF], proto UDP (17), length 53) 192.168.2.65.41767 > 23.226.232.80.2112: [udp sum ok] UDP, length 25 12:15:25.426547 IP (tos 0x0, ttl 50, id 45575, offset 0, flags [none], proto ICMP (1), length 81) 23.226.232.80 > 192.168.2.65: ICMP host 23.226.232.80 unreachable - admin prohibited, length 61 IP (tos 0x0, ttl 55, id 54256, offset 0, flags [DF], proto UDP (17), length 53) 192.168.2.65.41767 > 23.226.232.80.2112: [udp sum ok] UDP, length 25 12:15:25.437722 IP (tos 0x0, ttl 64, id 54260, offset 0, flags [DF], proto UDP (17), length 53) 192.168.2.65.59586 > 23.226.232.80.2112: [udp sum ok] UDP, length 25 12:15:25.477526 IP (tos 0x0, ttl 50, id 45623, offset 0, flags [none], proto ICMP (1), length 81) 23.226.232.80 > 192.168.2.65: ICMP host 23.226.232.80 unreachable - admin prohibited, length 61 IP (tos 0x0, ttl 55, id 54260, offset 0, flags [DF], proto UDP (17), length 53) 192.168.2.65.59586 > 23.226.232.80.2112: [udp sum ok] UDP, length 25 12:15:25.490388 IP (tos 0x0, ttl 64, id 54262, offset 0, flags [DF], proto UDP (17), length 53) 192.168.2.65.52274 > 23.226.232.80.2112: [udp sum ok] UDP, length 25 12:15:25.530584 IP (tos 0x0, ttl 50, id 45625, offset 0, flags [none], proto ICMP (1), length 81) 23.226.232.80 > 192.168.2.65: ICMP host 23.226.232.80 unreachable - admin prohibited, length 61 IP (tos 0x0, ttl 55, id 54262, offset 0, flags [DF], proto UDP (17), length 53) 192.168.2.65.52274 > 23.226.232.80.2112: [udp sum ok] UDP, length 25 12:15:25.594950 IP (tos 0x0, ttl 64, id 29001, offset 0, flags [DF], proto TCP (6), length 60) 192.168.2.65.39911 > 23.226.232.80.12865: Flags [S], cksum 0x2881 (correct), seq 2174008342, win 64240, options [mss 1460,sackOK,TS val 2289290538 ecr 0,nop,wscale 7], length 0 12:15:25.597800 IP (tos 0x0, ttl 64, id 42262, offset 0, flags [DF], proto TCP (6), length 60) 192.168.2.65.38041 > 23.226.232.80.12865: Flags [S], cksum 0x9c79 (correct), seq 4261008130, win 64240, options [mss 1460,sackOK,TS val 2289290542 ecr 0,nop,wscale 7], length 0 12:15:25.603039 IP (tos 0x0, ttl 64, id 63809, offset 0, flags [DF], proto TCP (6), length 60) 192.168.2.65.41435 > 23.226.232.80.12865: Flags [S], cksum 0xab85 (correct), seq 4038902764, win 64240, options [mss 1460,sackOK,TS val 2289290547 ecr 0,nop,wscale 7], length 0 12:15:25.609710 IP (tos 0x0, ttl 64, id 27989, offset 0, flags [DF], proto ICMP (1), length 84) 192.168.2.65 > 23.226.232.80: ICMP echo request, id 10612, seq 0, length 64 12:15:25.634196 IP (tos 0x0, ttl 50, id 15238, offset 0, flags [DF], proto TCP (6), length 40) 23.226.232.80.12865 > 192.168.2.65.39911: Flags [R.], cksum 0xe0df (correct), seq 0, ack 2174008343, win 0, length 0 12:15:25.637456 IP (tos 0x0, ttl 50, id 15239, offset 0, flags [DF], proto TCP (6), length 40) 23.226.232.80.12865 > 192.168.2.65.38041: Flags [R.], cksum 0x54dc (correct), seq 0, ack 4261008131, win 0, length 0 12:15:25.643244 IP (tos 0x0, ttl 50, id 15242, offset 0, flags [DF], proto TCP (6), length 40) 23.226.232.80.12865 > 192.168.2.65.41435: Flags [R.], cksum 0x63ed (correct), seq 0, ack 4038902765, win 0, length 0 12:15:25.649427 IP (tos 0x0, ttl 50, id 45641, offset 0, flags [none], proto ICMP (1), length 84) 23.226.232.80 > 192.168.2.65: ICMP echo reply, id 10612, seq 0, length 64 12:15:25.809981 IP (tos 0x0, ttl 64, id 28037, offset 0, flags [DF], proto ICMP (1), length 84) 192.168.2.65 > 23.226.232.80: ICMP echo request, id 10612, seq 1, length 64 12:15:25.849400 IP (tos 0x0, ttl 50, id 45656, offset 0, flags [none], proto ICMP (1), length 84) 23.226.232.80 > 192.168.2.65: ICMP echo reply, id 10612, seq 1, length 64 12:15:26.010268 IP (tos 0x0, ttl 64, id 28060, offset 0, flags [DF], proto ICMP (1), length 84) 192.168.2.65 > 23.226.232.80: ICMP echo request, id 10612, seq 2, length 64 12:15:26.049420 IP (tos 0x0, ttl 50, id 45715, offset 0, flags [none], proto ICMP (1), length 84) 23.226.232.80 > 192.168.2.65: ICMP echo reply, id 10612, seq 2, length 64 12:15:26.210592 IP (tos 0x0, ttl 64, id 28110, offset 0, flags [DF], proto ICMP (1), length 84) 192.168.2.65 > 23.226.232.80: ICMP echo request, id 10612, seq 3, length 64 12:15:26.249923 IP (tos 0x0, ttl 50, id 45830, offset 0, flags [none], proto ICMP (1), length 84) 23.226.232.80 > 192.168.2.65: ICMP echo reply, id 10612, seq 3, length 64 ------=_NextPart_000_0031_01D6ED9C.8C009DA0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Dear All

Some time = ago, I stood up a Linux Mint VM on my windows box in which to run flent. = Flent showed (of course) that I had the usual bloat.

Since then, I have replaced my router with an Ubiquiti = ER-4 so I could shape traffic with CAKE, getting unadulterated traffic = from my VDSL modem  via IP passthrough.

I have pre-CAKE flent data using this router. But I = can’t get data after starting CAKE.

 

The issue is = that I am getting “No valid Data” from = flent.

 

The flent log is unhelpful:

Program exited = non-zero

Command produced no valid = data

 

The command line output is a more helpful: =

 

Starting rrul test. = Expected run time: 70 seconds.

WARNING: Program exited = non-zero.

Runner class: = NetperfDemoRunner

Command: /usr/local/bin/netperf -P 0 -v 0 -D = -0.20 -4 -Y EF,EF -H 23.226.232.80 -p 12865 -t UDP_RR -l 70 -F = /dev/urandom    --   -H 23.226.232.80 -k = THROUGHPUT,LOCAL_CONG_CONTROL,REMOTE_CONG_CONTROL,TRANSPORT_MSS,LOCAL_TRA= NSPORT_RETRANS,REMOTE_TRANSPORT_RETRANS,LOCAL_SOCKET_TOS,REMOTE_SOCKET_TO= S,DIRECTION,ELAPSED_TIME,PROTOCOL,LOCAL_SEND_SIZE,LOCAL_RECV_SIZE,REMOTE_= SEND_SIZE,REMOTE_RECV_SIZE 

Return code: 255

Stdout: establish control: = are you sure there is a netserver listening on 23.226.232.80 at port = 12865?

Establish control could not establish the = control connection from 0.0.0.0 port 0 address family AF_INET to = 23.226.232.80 port 12865 address family AF_INET

 

I = don’t know how to decipher the above failure. However, I presumed = an error on my side: a misconfigured firewall or port forwarding rule on = the router. But I can’t find one.

 

A tcpdump of = traffic to and from the VM (below) seems to show (to my inexperienced = eye) that some traffic on port 12865 is reaching the VM. But I = can’t tell what traffic is being blocked that would cause flent to = think that there is no netserver listening.

 

Any help = would be very much appreciated!

with = thanks,

Jeremy

 

12:15:25.386575 IP (tos 0x0, ttl 64, id 54256, offset = 0, flags [DF], proto UDP (17), length 53)

    192.168.2.65.41767 > = 23.226.232.80.2112: [udp sum ok] UDP, length 25

12:15:25.426547 IP (tos 0x0, ttl 50, id 45575, offset = 0, flags [none], proto ICMP (1), length 81)

    23.226.232.80 > 192.168.2.65: = ICMP host 23.226.232.80 unreachable - admin prohibited, length = 61

        IP (tos = 0x0, ttl 55, id 54256, offset 0, flags [DF], proto UDP (17), length = 53)

    = 192.168.2.65.41767 > 23.226.232.80.2112: [udp sum ok] UDP, length = 25

12:15:25.437722 IP (tos 0x0, ttl = 64, id 54260, offset 0, flags [DF], proto UDP (17), length = 53)

    = 192.168.2.65.59586 > 23.226.232.80.2112: [udp sum ok] UDP, length = 25

12:15:25.477526 IP (tos 0x0, ttl = 50, id 45623, offset 0, flags [none], proto ICMP (1), length = 81)

    23.226.232.80 = > 192.168.2.65: ICMP host 23.226.232.80 unreachable - admin = prohibited, length 61

        IP (tos = 0x0, ttl 55, id 54260, offset 0, flags [DF], proto UDP (17), length = 53)

    = 192.168.2.65.59586 > 23.226.232.80.2112: [udp sum ok] UDP, length = 25

12:15:25.490388 IP (tos 0x0, ttl = 64, id 54262, offset 0, flags [DF], proto UDP (17), length = 53)

    = 192.168.2.65.52274 > 23.226.232.80.2112: [udp sum ok] UDP, length = 25

12:15:25.530584 IP (tos 0x0, ttl = 50, id 45625, offset 0, flags [none], proto ICMP (1), length = 81)

    23.226.232.80 = > 192.168.2.65: ICMP host 23.226.232.80 unreachable - admin = prohibited, length 61

        IP (tos = 0x0, ttl 55, id 54262, offset 0, flags [DF], proto UDP (17), length = 53)

    = 192.168.2.65.52274 > 23.226.232.80.2112: [udp sum ok] UDP, length = 25

12:15:25.594950 IP (tos 0x0, ttl = 64, id 29001, offset 0, flags [DF], proto TCP (6), length = 60)

    = 192.168.2.65.39911 > 23.226.232.80.12865: Flags [S], cksum 0x2881 = (correct), seq 2174008342, win 64240, options [mss 1460,sackOK,TS val = 2289290538 ecr 0,nop,wscale 7], length 0

12:15:25.597800 IP (tos 0x0, ttl 64, id 42262, offset = 0, flags [DF], proto TCP (6), length 60)

    192.168.2.65.38041 > = 23.226.232.80.12865: Flags [S], cksum 0x9c79 (correct), seq 4261008130, = win 64240, options [mss 1460,sackOK,TS val 2289290542 ecr 0,nop,wscale = 7], length 0

12:15:25.603039 IP (tos = 0x0, ttl 64, id 63809, offset 0, flags [DF], proto TCP (6), length = 60)

    = 192.168.2.65.41435 > 23.226.232.80.12865: Flags [S], cksum 0xab85 = (correct), seq 4038902764, win 64240, options [mss 1460,sackOK,TS val = 2289290547 ecr 0,nop,wscale 7], length 0

12:15:25.609710 IP (tos 0x0, ttl 64, id 27989, offset = 0, flags [DF], proto ICMP (1), length 84)

    192.168.2.65 > 23.226.232.80: = ICMP echo request, id 10612, seq 0, length 64

12:15:25.634196 IP (tos 0x0, ttl 50, id 15238, offset = 0, flags [DF], proto TCP (6), length 40)

    23.226.232.80.12865 > 192.168.2.65.39911: Flags [R.], = cksum 0xe0df (correct), seq 0, ack 2174008343, win 0, length = 0

12:15:25.637456 IP (tos 0x0, ttl = 50, id 15239, offset 0, flags [DF], proto TCP (6), length = 40)

    = 23.226.232.80.12865 > 192.168.2.65.38041: Flags [R.], cksum 0x54dc = (correct), seq 0, ack 4261008131, win 0, length 0

12:15:25.643244 IP (tos 0x0, ttl 50, id 15242, offset = 0, flags [DF], proto TCP (6), length 40)

    23.226.232.80.12865 > = 192.168.2.65.41435: Flags [R.], cksum 0x63ed (correct), seq 0, ack = 4038902765, win 0, length 0

12:15:25.649427 IP (tos 0x0, ttl 50, id 45641, offset = 0, flags [none], proto ICMP (1), length 84)

    23.226.232.80 > 192.168.2.65: = ICMP echo reply, id 10612, seq 0, length 64

12:15:25.809981 IP (tos 0x0, ttl 64, id 28037, offset = 0, flags [DF], proto ICMP (1), length 84)

    192.168.2.65 > 23.226.232.80: = ICMP echo request, id 10612, seq 1, length 64

12:15:25.849400 IP (tos 0x0, ttl 50, id 45656, offset = 0, flags [none], proto ICMP (1), length 84)

    23.226.232.80 > 192.168.2.65: = ICMP echo reply, id 10612, seq 1, length 64

12:15:26.010268 IP (tos 0x0, ttl 64, id 28060, offset = 0, flags [DF], proto ICMP (1), length 84)

    192.168.2.65 > 23.226.232.80: = ICMP echo request, id 10612, seq 2, length 64

12:15:26.049420 IP (tos 0x0, ttl 50, id 45715, offset = 0, flags [none], proto ICMP (1), length 84)

    23.226.232.80 > 192.168.2.65: = ICMP echo reply, id 10612, seq 2, length 64

12:15:26.210592 IP (tos 0x0, ttl 64, id 28110, offset = 0, flags [DF], proto ICMP (1), length 84)

    192.168.2.65 > 23.226.232.80: = ICMP echo request, id 10612, seq 3, length 64

12:15:26.249923 IP (tos 0x0, ttl 50, id 45830, offset = 0, flags [none], proto ICMP (1), length 84)

    23.226.232.80 > 192.168.2.65: = ICMP echo reply, id 10612, seq 3, length = 64

------=_NextPart_000_0031_01D6ED9C.8C009DA0--