HECnet

hecnet@lists.dfupdate.se

2 participants
15583 discussions

HECnet bridge and tun/tap problems on Ubuntu 12.04 ...

by bob＠jfcl.com

`tcpdump -vvvi tap0` Yep, I'll try that tonight. Gotta go now. You bridged tap0 to your external interface, right? No. In fact, that's the whole point - to keep HECnet traffic off of my real Ethernet. tap0 is connected to only two things - Johnny's bridge, and QNA-1 (xqb on simh). QNA-0 (xq on simh) is connected to my physical Ethernet. VMS sees both and, if necessary, routes DECnet across them. Bob

11 years, 12 months

HECnet bridge and tun/tap problems on Ubuntu 12.04 ...

by bob＠jfcl.com

Recent simh versions no longer need any external program to work with tap devices. Mark - I was just looking at this. Looks like in simh you now say attach xq tap:tap0 What does that do that attach xq tap0 does not? Does the first one make simh create the tap device? That doesn't really help in this case - the problem is that I need to run Johnny's bridge on tap0 too, so it needs to already exist before I start simh. tunctl is still the only answer. Thanks, Bob

11 years, 12 months

HECnet bridge and tun/tap problems on Ubuntu 12.04 ...

by b4＠gewt.net

On Sun, 10 Nov 2013, Bob Armstrong wrote: `ifconfig <interface> promisc` That's too easy :-) Sadly, it doesn't seem to fix anything. Both the bridge and simh are connected to tap0, apparently w/o error, but no messages seem to be going anywhere. `tcpdump -vvvi tap0` You bridged tap0 to your external interface, right? Bob -- Cory Smelosky http://gewt.net Personal stuff http://gimme-sympathy.org Projects

11 years, 12 months

HECnet bridge and tun/tap problems on Ubuntu 12.04 ...

by bob＠jfcl.com

`ifconfig <interface> promisc` That's too easy :-) Sadly, it doesn't seem to fix anything. Both the bridge and simh are connected to tap0, apparently w/o error, but no messages seem to be going anywhere. Bob

11 years, 12 months

HECnet bridge and tun/tap problems on Ubuntu 12.04 ...

by bob＠jfcl.com

I know that I've seen a patch to simh in the past, to connect to HECnet directly from simh, Yep, I've seen that too, although I don't know the current status. Maybe Mark can put it in the production simh release ? In the meantime, the tap device solves the problem just fine (or at least it used to). Bob

11 years, 12 months

HECnet bridge and tun/tap problems on Ubuntu 12.04 ...

by b4＠gewt.net

On Sun, 10 Nov 2013, Bob Armstrong wrote: Try setting the interfaces promiscuous. Ummm, what's the magic command to do that? `ifconfig <interface> promisc` Bob -- Cory Smelosky http://gewt.net Personal stuff http://gimme-sympathy.org Projects

11 years, 12 months

HECnet bridge and tun/tap problems on Ubuntu 12.04 ...

by bob＠jfcl.com

Recent simh versions no longer need any external program to work with tap devices. I saw that - simh v3.9, I think. I'm still using 3.8-3 (I have some local patches that I don't want to redo just yet). It's a good suggestion, but the fact is that the old simh worked just fine with Ubuntu 10.04 - it's the upgrade to 12.04 that broke things. Bob

11 years, 12 months

HECnet bridge and tun/tap problems on Ubuntu 12.04 ...

by bob＠jfcl.com

Try setting the interfaces promiscuous. Ummm, what's the magic command to do that? Bob

11 years, 12 months

HECnet bridge and tun/tap problems on Ubuntu 12.04 ...

by bqt＠softjar.se

Mark, I don't think Bob suggested he used some special program to connect simh to a tap device. What he did was use my bridge to connect his machines to HECnet, which is a step on the other side of the tap device. By the way, Bob, I know that I've seen a patch to simh in the past, to connect to HECnet directly from simh, without the addition of the bridge program. Maybe something to use? Johnny On 2013-11-10 18:53, Mark Pizzolato - Info Comm wrote: Hi Bob, Recent simh versions no longer need any external program to work with tap devices. There is integrated support for tap devices, and there also is support for the more generic vde networking capabilities. The latest source is available at: https://github.com/simh/simh/archive/master.zip To build on Ubuntu 12.0.4 the first time, as root you may need to: # apt-get install libpcap-dev # apt-get install libvdeplug2-dev Then as a normal user: $ make vax -Mark *From:*owner-hecnet at Update.UU.SE [mailto:owner-hecnet at Update.UU.SE] *On Behalf Of *Bob Armstrong *Sent:* Sunday, November 10, 2013 9:08 AM *To:* hecnet at Update.UU.SE *Subject:* [HECnet] HECnet bridge and tun/tap problems on Ubuntu 12.04 ... It s not exactly a DEC problem, but I know there are several people on HECnet running simh under Linux and I m hoping somebody has already figured this one out. I used to run simh (vax and pdp11 both) under Ubuntu 10.04 using Johnny s bridge program and a tap device to connect to HECnet. sudo tunctl -t tap0 sudo ifconfig tap0 up sudo -b /usr/local/bin/hecnet-bridge 4711 the bridge.conf file (I ll post it if anybody wants) bridges tap0 with Psilo.update.uu.se and in simh I would say set xqb enabled attach xqb tap0 and it worked great. Everybody was happy :-) BUT, now I ve upgraded to Ubuntu 12.04 (Ok, I m not an early adopter!) and, as you might guess, it doesn t work anymore. No errors and the tap0 device looks OK bob at falsetto:~/legato$ ifconfig tap0 tap0 Link encap:Ethernet HWaddr c6:36:37:eb:16:7a UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) but nothing ever happens. No data seems to pass between the bridge program and simh. Is anybody else using Ubuntu? Did you run into this problem? Thanks, Bob -- Johnny Billquist || "I'm on a bus || on a psychedelic trip email: bqt at softjar.se || Reading murder books pdp is alive! || tryin' to stay hip" - B. Idol

11 years, 12 months

HECnet bridge and tun/tap problems on Ubuntu 12.04 ...

by Mark＠infocomm.com

Hi Bob, Recent simh versions no longer need any external program to work with tap devices. There is integrated support for tap devices, and there also is support for the more generic vde networking capabilities. The latest source is available at: https://github.com/simh/simh/archive/master.zip To build on Ubuntu 12.0.4 the first time, as root you may need to: # apt-get install libpcap-dev # apt-get install libvdeplug2-dev Then as a normal user: $ make vax - Mark From: owner-hecnet at Update.UU.SE [mailto:owner-hecnet at Update.UU.SE] On Behalf Of Bob Armstrong Sent: Sunday, November 10, 2013 9:08 AM To: hecnet at Update.UU.SE Subject: [HECnet] HECnet bridge and tun/tap problems on Ubuntu 12.04 ... It s not exactly a DEC problem, but I know there are several people on HECnet running simh under Linux and I m hoping somebody has already figured this one out. I used to run simh (vax and pdp11 both) under Ubuntu 10.04 using Johnny s bridge program and a tap device to connect to HECnet. sudo tunctl -t tap0 sudo ifconfig tap0 up sudo -b /usr/local/bin/hecnet-bridge 4711 the bridge.conf file (I ll post it if anybody wants) bridges tap0 with Psilo.update.uu.se and in simh I would say set xqb enabled attach xqb tap0 and it worked great. Everybody was happy :-) BUT, now I ve upgraded to Ubuntu 12.04 (Ok, I m not an early adopter!) and, as you might guess, it doesn t work anymore. No errors and the tap0 device looks OK bob at falsetto:~/legato$ ifconfig tap0 tap0 Link encap:Ethernet HWaddr c6:36:37:eb:16:7a UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) but nothing ever happens. No data seems to pass between the bridge program and simh. Is anybody else using Ubuntu? Did you run into this problem? Thanks, Bob

11 years, 12 months

Jump to page:

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

HECnet