Re: [Babel-users] [Battlemesh] WBMv10: CDF graphs of ping test

Battlemesh allowed me to finally track down a bug in the address compressor of olsrd2, which sometimes depending on the order and pattern of addresses made tlvs vanish... Not sure this helps explaining it, but I consider this Battlemesh a good success. Henning Am 16.06.2017 10:32 schrieb

Re: [Babel-users] [Cerowrt-devel] [Make-wifi-fast] perverse powersave bug with sta/ap mode

On Thu, Apr 28, 2016 at 9:29 PM, Juliusz Chroboczek wrote: >> I must admit I have been thinking about switching off Duplicate >> Address Detection for mesh interfaces automatically... > > What problem are you trying to solve? Less useless overhead on slow-speed

Re: [Babel-users] [Cerowrt-devel] [Make-wifi-fast] perverse powersave bug with sta/ap mode

I must admit I have been thinking about switching off Duplicate Address Detection for mesh interfaces automatically... it makes not much sense on non-transitive interfaces anyways. Henning On Thu, Apr 28, 2016 at 8:54 PM, Juliusz Chroboczek wrote: >> I believe

Re: [Babel-users] [Make-wifi-fast] [Cerowrt-devel] perverse powersave bug with sta/ap mode

On Thu, Apr 28, 2016 at 6:52 PM, Dave Taht wrote: >> Why not just sending IP multicast (not 802.11 management frames) with >> a higher rate (lowest best linkspeed to all known neighbors)? > > )I've always liked this idea as an enhancement to the existing 802.11 > spec. It is

Re: [Babel-users] [Cerowrt-devel] [Make-wifi-fast] perverse powersave bug with sta/ap mode

mail/openwrt-devel/2015-June/033398.html Why not just sending IP multicast (not 802.11 management frames) with a higher rate (lowest best linkspeed to all known neighbors)? Henning Rogge ___ Babel-users mailing list Babel-users@lists.alioth.debian.org h

Re: [Babel-users] failing over faster?

On Sun, Apr 24, 2016 at 11:12 PM, Juliusz Chroboczek wrote: >> http://stackoverflow.com/questions/7225888/how-can-i-monitor-the-nic-statusup-down-in-a-c-program-without-polling-the-ker > > Babeld is already monitoring netlink messages (see funciton filter_netlink >

Re: [Babel-users] New paper on Babel, BMX6 and OLSR: Evaluation of mesh routing protocols for wireless community networks

On Tue, Apr 19, 2016 at 8:32 PM, Dave Taht wrote: > I finally got around to reading these papers. I liked the compression > techniques used by bmx6... > > I can't help but want to also increase babel's update rate from 2sec > to .5sec as in bmx6 for comparison. OLSRd (and

Re: [Babel-users] Some thoughts about Babel (feature requests)

On Fri, Dec 18, 2015 at 11:13 AM, Juliusz Chroboczek wrote: >> We forked babeld and have included an ipc process which allows us to add >> and remove interfaces while babeld is running: >> github.com/sudomesh/babeld > > Nice. > > My plan is a little different: I

Re: [Babel-users] Some thoughts about Babel (feature requests)

On Fri, Dec 18, 2015 at 9:29 PM, Juliusz Chroboczek wrote: >> Just a crazy idea. Could both OLSR2 and Babel share the same language >> on this interface? ;-) > > Both Henning and I intend to reflect accurately the internal > implementation details, many of which

Re: [Babel-users] Detecting bridges

his? https://en.wikipedia.org/wiki/Link_Layer_Discovery_Protocol Not sure how well it is supported by consumer grade switches. Henning Rogge ___ Babel-users mailing list Babel-users@lists.alioth.debian.org http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/babel-users

Re: [Babel-users] Bucket full, dropping packet

On Mon, Dec 14, 2015 at 8:15 PM, Dave Taht wrote: > Is there a reliable way of determining that an underlying interface is a > bridge? A local bridge/wifi? Sure... just look into the source of the brctl tool... it can give you a list of all bridge interfaces. A "wifi

Re: [Babel-users] Low level rewrite, install filters

No, I just setup 2 routes on a VM (1 IPv4, 1 IPv6), imported them into OLSRv2 and watched them appearing on the other VM. It helped me to find quite a few bugs, both in packet generation/fragmentation and in the netlink routing code. Henning On Fri, Nov 13, 2015 at 12:46 PM,

Re: [Babel-users] Low level rewrite, install filters

Hi, I would suggest doing some "stress" test where Babel has to set LOTS of routes at once. I had once a race condition in the OLSRv2 netlink code that only happend with 1000+ routes on the way to the kernel. Henning Rogge On Thu, Nov 12, 2015 at 11:37 PM, Juliusz Chroboczek <

Re: [Babel-users] Specifying the routing table of exported routes

Yes, copying the routes with a second service just to put some of them into a different routing table sounds like a lot of unnecessary complexity. Henning On Thu, Aug 27, 2015 at 3:16 PM, Juliusz Chroboczek j...@pps.univ-paris-diderot.fr wrote: Why not having a separate service which

Re: [Babel-users] Specifying the routing table of exported routes

On Thu, Aug 27, 2015 at 12:49 AM, Juliusz Chroboczek j...@pps.univ-paris-diderot.fr wrote: Then we can have the following order of routing tables on routers: babel olsr babel_default olsr_default Mitar, I'll be glad to implement the hack that you require, but let's please think whether

Re: [Babel-users] [babel] Babel to standard

for Standard Track Babel and get an unpleasant surprise. Henning Rogge ___ Babel-users mailing list Babel-users@lists.alioth.debian.org http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/babel-users

Re: [Babel-users] Specify router-id explicitly

On Sun, Jul 12, 2015 at 10:53 AM, Juliusz Chroboczek j...@pps.univ-paris-diderot.fr wrote: Please do not make this option available in the OpenWRT config file. Unfortunately hnetd babeld communication occurs solely through configuration file (Fragment). Ah merde. Therefore at least for

Re: [Babel-users] Diversity routing in a many channeled world

The iw code is quite straightforward I think. I used it as an inspiration for my nl80211_listener plugin Henning On Thu, Jun 18, 2015 at 8:55 PM, Dave Taht dave.t...@gmail.com wrote: The iw package appears canonical, and BSD licensed, and uses nl80211.h (exported from the linux kernel, also

Re: [Babel-users] the routing atomic update wet paint - because *I* care

If you work with atomic route replacement even putting ALL of them into a netlink message (or as many as you can fit in) works. Henning On Tue, Apr 7, 2015 at 12:19 PM, Matthieu Boutier bout...@pps.univ-paris-diderot.fr wrote: I agree, but I would like to know how many packets we lose. Since

Re: [Babel-users] the routing atomic update wet paint - because *I* care

On Tue, Apr 7, 2015 at 3:57 PM, Dave Taht dave.t...@gmail.com wrote: Interface index is not a problem... metric-change is. I am sorry, I do not understand, once again. If the route has the same destination and metric, you will overwrite it with an atomic update, regardless of the outgoing

Re: [Babel-users] the routing atomic update wet paint - because *I* care

On Mon, Apr 6, 2015 at 7:22 PM, Dave Taht dave.t...@gmail.com wrote: Well, I tried the patches and they did not work (as expected), but I think we are closer. I will try to create some test cases using ip route to do what I want, and get back to folk when I have time. I have a ton of other

Re: [Babel-users] the routing atomic update wet paint - because *I* care

On Mon, Apr 6, 2015 at 11:03 AM, Matthieu Boutier bout...@pps.univ-paris-diderot.fr wrote: I think the unique key for the route is destination, routing table and metric. The metric part is important, if you put the routing protocol path cost into the route, atomic replacement will not work.

Re: [Babel-users] the routing atomic update wet paint - because *I* care

routing API. ;) On Mon, Mar 16, 2015 at 11:32 AM, Henning Rogge hro...@gmail.com wrote: On Mon, Mar 16, 2015 at 7:25 PM, Dave Taht dave.t...@gmail.com wrote: got code? I just used the same code I use for IPv4 (which has been working for atomic replacement for ages). I got confused when someone

Re: [Babel-users] the routing atomic update wet paint - because *I* care

Good as a reference... not that good for copying code directly. Henning On Mon, Apr 6, 2015 at 6:58 PM, Julien Cristau jcris...@debian.org wrote: On Mon, Apr 6, 2015 at 10:56:41 +0200, Matthieu Boutier wrote: Is there anywhere a good reference to netlink? iproute2, libnl, kernel sources ?

Re: [Babel-users] Babel TODO for 1.6.0

that atomic overwriting of IPv6 routes wasn't working for older kernels. The only thing I know (at the moment) is debian Wheezy: BAD and Ubuntu 14.10: GOOD. IPv4 atomic overwriting has been working forever... at least 5-8 years. Maybe even during Kernel 2.4 times. Henning Rogge

Re: [Babel-users] Mesh Network

towards the router. So check: - can I ping between two different mesh routers? - can I ping between the mesh router and a local AP client? - can I ping an AP client from a different mesh router? - can I ping between two AP clients attached to different mesh routers? Henning Rogge On Wed, Mar 25

Re: [Babel-users] Dave's wishlist [was: Source-specific routing merged]

obviously nothing yet for source routing, but should be complete otherwise). I would suggest building a generic wrapper that converts UCI into babel configuration without knowing the names of the variables if possible. This way you don't need to change the openwrt scripts with every release. Henning

Re: [Babel-users] Source-specific routing merged into master

=oonf.git;a=blob;f=src-plugins/subsystems/os_linux/os_routing_linux.c;h=4194fd04f8f259b686a1343cc906fc8649c6a7b6;hb=master If I understand it correctly you just need to set the routes with NLM_F_CREATE | NLM_F_REPLACE to get the atomic replacement. Henning Rogge On Mon, Mar 16, 2015 at 11:24 AM

Re: [Babel-users] Bable vs Linux Mesh mode.

thing about 802.11s is that you can use it as a wifi adhoc mode that can be bridged to an ethernet connection... if you switch of the mesh part of the protocol. ;) Henning Rogge ___ Babel-users mailing list Babel-users@lists.alioth.debian.org http

Re: [Babel-users] TLV and sub-TLV space: allocation policy

to 240-254 ? This way experimental plus reserved would be 0xf0 - 0xff. And it would give you a continuous Specification Required range. Henning Rogge ___ Babel-users mailing list Babel-users@lists.alioth.debian.org http://lists.alioth.debian.org/cgi-bin

Re: [Babel-users] SIGHUP shouldn't kill babeld

Maybe a parameter to tell babeld don't stop with SIGHUP ? So a startup script can prevent the restart from happening? Henning Rogge On Sun, Sep 22, 2013 at 8:26 PM, Juliusz Chroboczek j...@pps.univ-paris-diderot.fr wrote: What about quitting on SIGHUP only if babeld is run on non-daemon mode

Re: [Babel-users] ipv6_subtrees fixes queued for 3.10.10 (probably)

You can use uname() to get the kernel version. We already use it in Olsrd to sidestep a semantic change in the procfile system. Henning On Thu, Aug 22, 2013 at 12:01 AM, Dave Taht dave.t...@gmail.com wrote: I've got this in the next version of cerowrt and it looks like it is also targetted for

Re: [Babel-users] Add -v option to babel?

If you tag all versions in your repository, it should be easy to get a version string from the last relevant tag. We use the following command in the OLSRv2 makefile system: git describe --always --long --tags --dirty --match v[0-9]* Henning On Sun, Jul 21, 2013 at 1:16 PM, Juliusz Chroboczek

Re: [Babel-users] RTT stability inside a GRE tunnel

Maybe they can do it as long as the tunnel destination is different on both sides? Henning On Tue, Jul 2, 2013 at 8:31 PM, Michael Richardson m...@sandelman.ca wrote: Baptiste Jonglez baptiste.jong...@ens-lyon.fr wrote: 2) I would guess that the NAT has been setup with your host as the

Re: [Babel-users] RTT-aware branch of Babel

On Fri, Jun 21, 2013 at 7:25 PM, Dave Taht dave.t...@gmail.com wrote: On Fri, Jun 21, 2013 at 10:04 AM, Henning Rogge hro...@googlemail.com wrote: At the lowest timescale possible on a given link you are either at capacity 1 or 0. Same problem for packetloss based metrics in mesh networks

Re: [Babel-users] atomic updates and ipv6 cache flushing issues

On Sun, May 5, 2013 at 5:59 PM, Juliusz Chroboczek j...@pps.univ-paris-diderot.fr wrote: 2. When was NLM_F_REPLACE introduced? I think we have been using it on Olsr.org for years... so the feature was already present in kernel 2.4. Henning Rogge -- We began as wanderers, and we are wanderers

Re: [Babel-users] Source-specific routes

. He ran into some trouble and we switched to IPIP tunnels, but I have to contact him if he remembers how well RTA_SRC worked. There is also (as you most likely know) a Policy Rule selector based on the src-ip prefix. Not sure if this one is working correctly. Henning Rogge -- We began as wanderers

Re: [Babel-users] DLEP [was: switching cerowrt to quagga-babeld issues]

networking research. Yes, it is... it might become a good raw data source for the metric calculation of any kind of mesh routing protocol. Henning Rogge -- Steven Hawkings about cosmic inflation: An increase of billions of billions of percent in a tiny fraction of a second. Of course

Re: [Babel-users] RFC 6126: The Babel Routing Protocol

On Wednesday 06 April 2011 10:41:05 Gabriel Kerneis wrote: http://www.rfc-editor.org/rfc/rfc6126.txt Congratulations Juliusz! A can only agree to this... gratulation, its always a hard and boring work to write down the exact specifications of a protocol AFTER one got it working. :) Henning

Re: [Babel-users] Babel vs. PWRP

On Thursday 14 October 2010 01:48:14 Mitar wrote: http://www.tropos.com/technology/scalability.html Oh dear... another on of those we are the ultimate answer to live, the universe and the rest of MANET technology... Google for order one networks if you want to look at another one. Henning --

Re: [Babel-users] AHCP and IPv4 support

this is easy -- just use link-local addresses. Why not use link-local addresses in IPv4? The we-all-know-and-love 169.254.* addresses? Because there are not enough of them to generate them from MAC. With only 2^16 IPs it's a lot easier to get a collision. Henning Rogge -- 1) You can't win. 2) You

Re: [Babel-users] babeld-2.0

Am Donnerstag 22 April 2010 20:47:24 schrieb Dave Taht: I concur about secure BGP's limitations. It's what I meant by halfway decent. As for OSPFv3 + IPsec + IPv6, it's actually, well, not horrible. I had never heard of anyone getting it to work before today, actually. IPv6 and IPsec should be

Re: [Babel-users] Question about AHCP

about it or this is a list of IPs you should NOT use. This way you could adapt ipv4- stateless AHCP to situations where a different instance in the mesh node has insider knowledge about the used IPs. Henning Rogge signature.asc Description: This is a digitally signed message part

Re: [Babel-users] Question about AHCP

nodes. In particular, it would make sense to do server-based DAD for stateful configuration, and client-based for stateless. Interesting idea. Henning Rogge signature.asc Description: This is a digitally signed message part. ___ Babel-users mailing

Re: [Babel-users] Question about AHCP

separation of servers. Or maybe to distribute the leases to other AHCP-servers so you have some redundancy ? Henning Rogge signature.asc Description: This is a digitally signed message part. ___ Babel-users mailing list Babel-users

Re: [Babel-users] A peer-reviewed assessment of OLSR, BATMAN and Babel

). Henning Rogge -- Wo kämen wir hin, wenn alle sagten, wo kämem wir hin, und niemand ginge, um einmal zu schauen, wohin man käme, wenn man ginge. (Kurt Marti) ___ Babel-users mailing list Babel-users@lists.alioth.debian.org http://lists.alioth.debian.org

Re: [Babel-users] A peer-reviewed assessment of OLSR, BATMAN and Babel

people just use RFC compatible OLSR. I would be interested what config file you used for the test. If you plan to redo the test we (the olsr.org team) would be very interested in getting feedback what kind of problems you have so that we can improve our software. Henning Rogge signature.asc

Re: [Babel-users] IPv4+6 routing in Babel

On Fri, Sep 4, 2009 at 03:58, Harald Geyerhar...@lefant.net wrote: Henning Rogge hro...@googlemail.com: The problem is that link-local do not always work in manets because manet broadcast domains are not 'closed'. Can you be more explicit on that problem? I can't think of a situation where

Re: [Babel-users] IPv4+6 routing in Babel

traffic ? According to my knowledge you cannot insert a routing entry into linux with IPv6 as destination and IPv4 as gateway (next hop). Henning Rogge signature.asc Description: This is a digitally signed message part. ___ Babel-users mailing list Babel

Re: [Babel-users] cornercase issue (link sensing)

On Mittwoch 29 April 2009 19:11:32 Juliusz Chroboczek wrote: Sorry to follow-up on myself. In version 2, the neighbour is identified with the link-local IPv6 address, so multiple adjacencies between the same two nodes are okay. Just to be clear: there is no issue at all with conflicting

Re: [Babel-users] cornercase issue (link sensing)

On Mittwoch 29 April 2009 20:51:38 Juliusz Chroboczek wrote: Theoretically two nodes in two-hop range might get the same linklocal IP, because they don't share a link, but the node between them would be in trouble. Yep. A possible workaround would be to assign random IPv6 interface-ids

Re: [Babel-users] Babel at WBM and hoping over the same channel is evil

On Thu, Apr 23, 2009 at 1:08 AM, Juliusz Chroboczek juliusz.chroboc...@pps.jussieu.fr wrote: http://hackerspace.be/wbm2009#toc8 Mmmm... purty pictures. If you want to know why it's difficult to do right,  http://www.cse.yorku.ca/course_archive/2006-07/F/6590/Papers/yang2.pdf and if you