From (spam-protected)  Mon Mar  1 14:26:11 2021
From: (spam-protected) (Andreas Martens1)
Date: Mon, 1 Mar 2021 13:26:11 +0000
Subject: [Olsr-users] Basic problem? router_id from loopback
In-Reply-To: <52447cd1b7364d4f9e8ed09bbce30b53@tno.nl>
References: <OFAF1CE4EC.84042464-ON80258688.003B2667-80258688.0050CF8F@notes.na.collabserv.com>
 <52447cd1b7364d4f9e8ed09bbce30b53@tno.nl>
Message-ID: <OF2B66E41C.F125F11F-ON8025868B.00498E1C-8025868B.0049CF2B@notes.na.collabserv.com>

GOLD STAR TO THAT MAN!!!!

Thanks Ronald, I'd read through the material and I was sure that 
default_accept did what I wanted, I'd clearly read it wrong.



cheers,
Andreas






Andreas Martens
 


Research Engineer
 

Emerging Technology
 

IBM Research


Phone:
+44 (0) 1962 816833
37246833


Mobile:
+44 (0) 7824 544874



www.emerging-technology.co.uk

 








From:   "Velt, R. (Ronald) in 't" <Ronald.intVelt at tno.nl>
To:     Andreas Martens1 <amartens at uk.ibm.com>, 
"olsr-users at lists.olsr.org" <olsr-users at lists.olsr.org>
Date:   28/02/2021 21:33
Subject:        [EXTERNAL] RE: [Olsr-users] Basic problem? router_id from 
loopback



Hi Andreas, (See below) From: Olsr-users 
<olsr-users-bounces at lists.olsr.org> On Behalf Of Andreas Martens1 Sent: 
vrijdag 26 februari 2021 15:43 To: olsr-users at lists.olsr.org Subject: 
[Olsr-users] Basic problem? router_id from loopback 

Hi Andreas,
 
(See below)
 
From: Olsr-users <olsr-users-bounces at lists.olsr.org> On Behalf Of Andreas 
Martens1
Sent: vrijdag 26 februari 2021 15:43
To: olsr-users at lists.olsr.org
Subject: [Olsr-users] Basic problem? router_id from loopback
 
Hello all, 

I've been trying to get this working for some time and I feat I'm just not 
understanding something... This might be a n00b problem! 

I have a group of nodes in a few different wireless networks. Because they 
have an IP address for each NIC I wanted to give them a unique IP address 
that could be routed across all the networks. 
So I added an IP address to the lo device: 
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group 
default qlen 1000 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 
    inet 127.0.0.1/8 scope host lo 
       valid_lft forever preferred_lft forever 
    inet 172.20.0.1/32 scope global lo 
       valid_lft forever preferred_lft forever 
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever 
I then added [interface=lo] to the olsrd2.conf: 
[global] 
        fork 1 
[olsrv2] 
        originator default_accept 
        nhdp_routable true 
        tc_interval 8.0 
        tc_validity 40.0 
[nhdp] 
  mpr * 
[interface=lo] 
[interface=emane14] 
        hello_interval 2.0 
        hello_validity 10.0 
        l2default rx_bitrate 600k 
        multicast_v4 224.0.0.109 
        bindto 192.168.15.1 
        bindto default_reject 

[interface=emane13] 
        hello_interval 2.0 
        hello_validity 10.0 
        l2default rx_bitrate 600k 
        multicast_v4 224.0.0.109 
        bindto 192.168.14.1 
        bindto default_reject 

[interface=emane11] 
        hello_interval 2.0 
        hello_validity 10.0 
        l2default rx_bitrate 600k 
        multicast_v4 224.0.0.109 
        bindto 192.168.12.1 
        bindto default_reject 

but this seems to have stopped it working, as far as I can tell it's using 
127.0.0.1 as its router_id now instead of the id of a NIC.   

What does the config need to look like so it distributes routes to the 
172.20.0.0/32 addresses configured on loopback? 


cheers,
Andreas
Deferring to Henning for an authoritative answer, of course, but judging 
from the output of
# olsrd2_static --schema=olsrv2.originator ,
you should get rid of the ?originator default_accept? in the [olsrv2] 
stanza:
21:39:22.109 WARN(olsrv2_old_lan) src/olsrv2/olsrv2_old_lan/old_lan.c 147: 
Old LAN plugin does add support for the deprecated olsrv2/lan config 
option
    originator (list)
    Default value:
        '-127.0.0.0/8'
        '-224.0.0.0/12'
        '-::1'
        '-ff00::/8'
        'default_accept'
    Parameter is an apache2 style access control list made from a list of 
network addresses of the following types:
IPv4, IPv6
        (the address can have an optional prefix)
        Each of the addresses/prefixes can start with a '+' to add them to 
the whitelist and '-' to add it to the blacklist (default is the 
whitelist).
        In addition to this there are four keywords to configure the ACL:
        - 'first_accept' to parse the whitelist first
        - 'first_reject' to parse the blacklist first
        - 'default_accept' to accept input if it doesn't match either list
        - 'default_reject' to not accept it if it doesn't match either 
list
        (default mode is 'first_accept' and 'default_reject')
    Description:
        Filter for router originator addresses (ipv4 and ipv6) from the 
interface addresses. Olsrv2 will prefer routable addresses over linklocal 
addresses and addresses from loopback over other interfaces.
If I interpret this correctly, the default setting for ?originator? will 
ensure that 127.0.0.1 is filtered out and the address you added to the 
loopback interface gets selected.
Cheers,
Ronald
 
 
 

 
 
 
 
 
 
 
 
 
 




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