BIRD ripng default gateway route strange behavior
olivier a
oatech7402 at gmail.com
Sun May 3 12:33:49 CEST 2015
Network topology :
------------------
PC1-----Router1------Router2-----InternetGateway---z
eth1 eth0
RIPng enabled on PC1, Router1, Router2
Router2 has a static IPv6 DG ( Default Gateway ) to InternetGateway
Router1 has no static IPv6 DG, and no kernel{learn} directive.
Router2=Ubuntu14.04 LTS, Router1=raspbian Wheezy, bird = last version,
compiled from sources
link-local addresses replaces with symbolic names ( ie [fe80::Router1] )
Syslog :
--------
May 3 12:06:19 vubuntu-VirtualBox bird6: kernel1: Initializing
May 3 12:06:19 vubuntu-VirtualBox bird6: direct1: Initializing
May 3 12:06:19 vubuntu-VirtualBox bird6: device1: Initializing
May 3 12:06:19 vubuntu-VirtualBox bird6: rip1: Initializing
May 3 12:06:19 vubuntu-VirtualBox bird6: device1: Starting
May 3 12:06:19 vubuntu-VirtualBox bird6: device1: Scanning interfaces
May 3 12:06:19 vubuntu-VirtualBox bird6: device1: Connected to table master
May 3 12:06:19 vubuntu-VirtualBox bird6: device1: State changed to feed
May 3 12:06:19 vubuntu-VirtualBox bird6: kernel1: Starting
May 3 12:06:19 vubuntu-VirtualBox bird6: kernel1: Connected to table master
May 3 12:06:19 vubuntu-VirtualBox bird6: kernel1: State changed to feed
May 3 12:06:19 vubuntu-VirtualBox bird6: direct1: Starting
May 3 12:06:19 vubuntu-VirtualBox bird6: direct1: Connected to table master
May 3 12:06:19 vubuntu-VirtualBox bird6: direct1: State changed to feed
May 3 12:06:19 vubuntu-VirtualBox bird6: rip1: Starting
May 3 12:06:19 vubuntu-VirtualBox bird6: rip1: Listening on (dummy), port
521, mode broadcast (::)
May 3 12:06:19 vubuntu-VirtualBox bird6: rip1: Connected to table master
May 3 12:06:19 vubuntu-VirtualBox bird6: rip1: State changed to feed
May 3 12:06:19 vubuntu-VirtualBox bird6: Started
May 3 12:06:19 vubuntu-VirtualBox bird6: device1: State changed to up
May 3 12:06:19 vubuntu-VirtualBox bird6: kernel1 < interface lo goes up
May 3 12:06:19 vubuntu-VirtualBox bird6: kernel1 < interface eth0 goes up
May 3 12:06:19 vubuntu-VirtualBox bird6: kernel1 < interface eth1 goes up
May 3 12:06:19 vubuntu-VirtualBox bird6: kernel1: State changed to up
May 3 12:06:19 vubuntu-VirtualBox bird6: direct1 < primary address ::1/128
on interface lo added
May 3 12:06:19 vubuntu-VirtualBox bird6: direct1 < primary address
2001:db8:0:1::/64 on interface eth0 added
May 3 12:06:19 vubuntu-VirtualBox bird6: direct1 > added [best]
2001:db8:0:1::/64 dev eth0
May 3 12:06:19 vubuntu-VirtualBox bird6: kernel1 < rejected by protocol
2001:db8:0:1::/64 dev eth0
May 3 12:06:19 vubuntu-VirtualBox bird6: rip1 < added 2001:db8:0:1::/64
dev eth0
May 3 12:06:19 vubuntu-VirtualBox bird6: direct1 < secondary address
fe80::/64 on interface eth0 added
May 3 12:06:19 vubuntu-VirtualBox bird6: direct1 < primary address
2001:db8:0:5::/64 on interface eth1 added
May 3 12:06:19 vubuntu-VirtualBox bird6: direct1 > added [best]
2001:db8:0:5::/64 dev eth1
May 3 12:06:19 vubuntu-VirtualBox bird6: kernel1 < rejected by protocol
2001:db8:0:5::/64 dev eth1
May 3 12:06:19 vubuntu-VirtualBox bird6: rip1 < added 2001:db8:0:5::/64
dev eth1
May 3 12:06:19 vubuntu-VirtualBox bird6: direct1 < secondary address
fe80::/64 on interface eth1 added
May 3 12:06:19 vubuntu-VirtualBox bird6: direct1: State changed to up
May 3 12:06:19 vubuntu-VirtualBox bird6: rip1 < interface lo goes up
May 3 12:06:19 vubuntu-VirtualBox bird6: rip1 < interface eth0 goes up
May 3 12:06:19 vubuntu-VirtualBox bird6: rip1 < interface eth1 goes up
May 3 12:06:19 vubuntu-VirtualBox bird6: rip1 < added 2001:db8:0:1::/64
dev eth0
May 3 12:06:19 vubuntu-VirtualBox bird6: rip1 < added 2001:db8:0:5::/64
dev eth1
May 3 12:06:19 vubuntu-VirtualBox bird6: rip1: State changed to up
May 3 12:06:19 vubuntu-VirtualBox bird6: kernel1: Scanning routing table
May 3 12:06:19 vubuntu-VirtualBox bird6: kernel1: ::/0: [alien] created
May 3 12:06:19 vubuntu-VirtualBox bird6: kernel1: Pruning table master
May 3 12:06:19 vubuntu-VirtualBox bird6: kernel1: Pruning inherited routes
May 3 12:06:19 vubuntu-VirtualBox bird6: kernel1 > added [best] ::/0 via
2001:db8:0:1::1 on eth0
May 3 12:06:19 vubuntu-VirtualBox bird6: kernel1 < rejected by protocol
::/0 via 2001:db8:0:1::1 on eth0
May 3 12:06:19 vubuntu-VirtualBox bird6: rip1 < added ::/0 via
2001:db8:0:1::1 on eth0
May 3 12:06:19 vubuntu-VirtualBox bird6: rip1: Listening on eth1, port
521, mode multicast (ff02::9)
May 3 12:06:19 vubuntu-VirtualBox bird6: rip1: Listening on eth0, port
521, mode multicast (ff02::9)
May 3 12:06:21 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth0
May 3 12:06:21 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth1
May 3 12:06:22 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth0
May 3 12:06:22 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth1
May 3 12:06:22 vubuntu-VirtualBox bird6: rip1: block: fe80::[Router1]
tells me: ::/0 available, metric 16...
May 3 12:06:22 vubuntu-VirtualBox bird6: rip1 > added [best] ::/0 via
fe80::[Router1] on eth1
May 3 12:06:22 vubuntu-VirtualBox bird6: kernel1 < added ::/0 via
fe80::[Router1] on eth1
May 3 12:06:22 vubuntu-VirtualBox bird6: rip1 < forced accept by protocol
::/0 via fe80::[Router1] on eth1
May 3 12:06:22 vubuntu-VirtualBox bird6: rip1 < replaced ::/0 via
fe80::[Router1] on eth1
May 3 12:06:22 vubuntu-VirtualBox bird6: rip1: block: fe80::[Router1]
tells me: 2001:db8:0:1::/64 available, metric 16...
May 3 12:06:22 vubuntu-VirtualBox bird6: rip1 > added 2001:db8:0:1::/64
via fe80::[Router1] on eth1
May 3 12:06:23 vubuntu-VirtualBox bird6: rip1: block: fe80::[Router1]
tells me: ::/0 available, metric 16...
May 3 12:06:23 vubuntu-VirtualBox bird6: rip1 > ignored ::/0 via
fe80::[Router1] on eth1
May 3 12:06:23 vubuntu-VirtualBox bird6: rip1: block: fe80::[Router1]
tells me: 2001:db8:0:1::/64 available, metric 16...
May 3 12:06:23 vubuntu-VirtualBox bird6: rip1 > ignored 2001:db8:0:1::/64
via fe80::[Router1] on eth1
May 3 12:06:23 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth0
May 3 12:06:23 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth1
May 3 12:06:24 vubuntu-VirtualBox bird6: rip1: block: fe80::[Router1]
tells me: ::/0 available, metric 16...
May 3 12:06:24 vubuntu-VirtualBox bird6: rip1 > ignored ::/0 via
fe80::[Router1] on eth1
May 3 12:06:24 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth0
May 3 12:06:24 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth1
May 3 12:06:25 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth0
May 3 12:06:25 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth1
May 3 12:06:25 vubuntu-VirtualBox bird6: rip1: block: fe80::[Router1]
tells me: ::/0 available, metric 16...
May 3 12:06:25 vubuntu-VirtualBox bird6: rip1 > ignored ::/0 via
fe80::[Router1] on eth1
May 3 12:06:26 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth0
May 3 12:06:26 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth1
May 3 12:06:26 vubuntu-VirtualBox bird6: rip1: block: fe80::[Router1]
tells me: ::/0 available, metric 16...
May 3 12:06:26 vubuntu-VirtualBox bird6: rip1 > ignored ::/0 via
fe80::[Router1] on eth1
May 3 12:06:26 vubuntu-VirtualBox bird6: rip1: block: fe80::[Router1]
tells me: 2001:db8:0:1::/64 available, metric 16...
May 3 12:06:26 vubuntu-VirtualBox bird6: rip1 > ignored 2001:db8:0:1::/64
via fe80::[Router1] on eth1
May 3 12:06:26 vubuntu-VirtualBox bird6: rip1: block: fe80::[Router1]
tells me: 2001:db8:0:3::/64 available, metric 1...
May 3 12:06:26 vubuntu-VirtualBox bird6: rip1 > added [best]
2001:db8:0:3::/64 via fe80::[Router1] on eth1
May 3 12:06:26 vubuntu-VirtualBox bird6: kernel1 < added 2001:db8:0:3::/64
via fe80::[Router1] on eth1
May 3 12:06:26 vubuntu-VirtualBox bird6: rip1 < forced accept by protocol
2001:db8:0:3::/64 via fe80::[Router1] on eth1
May 3 12:06:26 vubuntu-VirtualBox bird6: rip1 < added 2001:db8:0:3::/64
via fe80::[Router1] on eth1
May 3 12:06:26 vubuntu-VirtualBox bird6: rip1: block: fe80::[Router1]
tells me: 2001:db8:0:5::/64 available, metric 1...
May 3 12:06:26 vubuntu-VirtualBox bird6: rip1 > added 2001:db8:0:5::/64
via fe80::[Router1] on eth1
May 3 12:06:27 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth0
May 3 12:06:27 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth1
May 3 12:06:28 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth0
May 3 12:06:28 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth1
May 3 12:06:29 vubuntu-VirtualBox bird6: device1: Scanning interfaces
May 3 12:06:29 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth0
May 3 12:06:29 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth1
May 3 12:06:30 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth0
May 3 12:06:30 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth1
May 3 12:06:31 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth0
May 3 12:06:31 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth1
May 3 12:06:32 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth0
May 3 12:06:32 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth1
May 3 12:06:33 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth0
May 3 12:06:33 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth1
May 3 12:06:34 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth0
May 3 12:06:34 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth1
May 3 12:06:35 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth0
May 3 12:06:35 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth1
May 3 12:06:36 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth0
May 3 12:06:36 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth1
May 3 12:06:37 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth0
May 3 12:06:37 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth1
May 3 12:06:38 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth0
May 3 12:06:38 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth1
May 3 12:06:39 vubuntu-VirtualBox bird6: device1: Scanning interfaces
May 3 12:06:39 vubuntu-VirtualBox bird6: kernel1: Scanning routing table
May 3 12:06:39 vubuntu-VirtualBox bird6: kernel1: 2001:db8:0:3::/64: seen
May 3 12:06:39 vubuntu-VirtualBox bird6: kernel1: ::/0: [alien] seen
May 3 12:06:39 vubuntu-VirtualBox bird6: kernel1: ::/0: seen
May 3 12:06:39 vubuntu-VirtualBox bird6: kernel1: Pruning table master
May 3 12:06:39 vubuntu-VirtualBox bird6: kernel1: Pruning inherited routes
May 3 12:06:39 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth0
May 3 12:06:39 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth1
May 3 12:06:40 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth0
May 3 12:06:40 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth1
May 3 12:06:41 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth0
May 3 12:06:41 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth1
May 3 12:06:42 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth0
May 3 12:06:42 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth1
May 3 12:06:43 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth0
May 3 12:06:43 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth1
May 3 12:06:44 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth0
May 3 12:06:44 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth1
May 3 12:06:45 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth0
May 3 12:06:45 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth1
May 3 12:06:46 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth0
May 3 12:06:46 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth1
May 3 12:06:47 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth0
May 3 12:06:47 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth1
May 3 12:06:48 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth0
May 3 12:06:48 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth1
May 3 12:06:49 vubuntu-VirtualBox bird6: device1: Scanning interfaces
May 3 12:06:49 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth0
May 3 12:06:49 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth1
May 3 12:06:50 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth0
May 3 12:06:50 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth1
May 3 12:06:51 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth0
May 3 12:06:51 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth1
May 3 12:06:52 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth0
May 3 12:06:52 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth1
May 3 12:06:53 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth0
May 3 12:06:53 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth1
May 3 12:06:54 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth0
May 3 12:06:54 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth1
May 3 12:06:55 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth0
May 3 12:06:55 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth1
May 3 12:06:56 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth0
May 3 12:06:56 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth1
May 3 12:06:57 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth0
May 3 12:06:57 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth1
May 3 12:06:57 vubuntu-VirtualBox bird6: rip1: block: fe80::[Router1]
tells me: ::/0 available, metric 16...
May 3 12:06:57 vubuntu-VirtualBox bird6: rip1 > ignored ::/0 via
fe80::[Router1] on eth1
May 3 12:06:57 vubuntu-VirtualBox bird6: rip1: block: fe80::[Router1]
tells me: 2001:db8:0:1::/64 available, metric 16...
May 3 12:06:57 vubuntu-VirtualBox bird6: rip1 > ignored 2001:db8:0:1::/64
via fe80::[Router1] on eth1
May 3 12:06:57 vubuntu-VirtualBox bird6: rip1: block: fe80::[Router1]
tells me: 2001:db8:0:3::/64 available, metric 1...
May 3 12:06:57 vubuntu-VirtualBox bird6: rip1 > ignored 2001:db8:0:3::/64
via fe80::[Router1] on eth1
May 3 12:06:57 vubuntu-VirtualBox bird6: rip1: block: fe80::[Router1]
tells me: 2001:db8:0:5::/64 available, metric 1...
May 3 12:06:57 vubuntu-VirtualBox bird6: rip1 > ignored 2001:db8:0:5::/64
via fe80::[Router1] on eth1
May 3 12:06:58 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth0
May 3 12:06:58 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth1
May 3 12:06:59 vubuntu-VirtualBox bird6: device1: Scanning interfaces
May 3 12:06:59 vubuntu-VirtualBox bird6: kernel1: Scanning routing table
May 3 12:06:59 vubuntu-VirtualBox bird6: kernel1: 2001:db8:0:3::/64: seen
May 3 12:06:59 vubuntu-VirtualBox bird6: kernel1: ::/0: [alien] seen
May 3 12:06:59 vubuntu-VirtualBox bird6: kernel1: ::/0: seen
May 3 12:06:59 vubuntu-VirtualBox bird6: kernel1: Pruning table master
May 3 12:06:59 vubuntu-VirtualBox bird6: kernel1: Pruning inherited routes
May 3 12:06:59 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth0
May 3 12:06:59 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth1
May 3 12:06:59 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth0
May 3 12:06:59 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth1
May 3 12:07:00 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth0
May 3 12:07:00 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth1
May 3 12:07:01 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth0
May 3 12:07:01 vubuntu-VirtualBox bird6: rip1: Broadcasting routing table
to eth1
Router2 routing table :
-----------------------
2001:db8:0:1::/64 dev eth0 proto kernel metric 256
2001:db8:0:3::/64 via fe80::[Router1] dev eth1 proto bird metric 1024
2001:db8:0:5::/64 dev eth1 proto kernel metric 256
fe80::/64 dev eth0 proto kernel metric 256
fe80::/64 dev eth1 proto kernel metric 256
default via 2001:db8:0:1::1 dev eth0 proto static metric 1
default via fe80::[Router1] dev eth1 proto bird metric 1024
Router2 bird6.conf file :
-------------------------
log syslog all;
debug protocols all;
#log stderr all;
#log "tmp" all;
router id 192.168.5.1;
protocol kernel {
learn;
scan time 20;
export all;
import all;
}
protocol direct {
#interface "eth0";
}
protocol device {
scan time 10;
}
protocol rip {
debug all;
port 521;
interface "*" { mode multicast; ttl security on; };
honor neighbor;
authentication none;
import all;
export all;
}
---------------------------------------------------------------------------
On Apr 29, 2015 4:30 PM, <pavel.tvrdik at nic.cz> wrote:
> Hi Olivier,
>
> I failed to reproduce the metric 1024. Can you please send a log file from
> Router2?
>
> On 2015-04-29 11:02, olivier a wrote:
>
>> Follow up : Nobody has ideas about that ?
>> On Apr 18, 2015 7:14 PM, "olivier a" <oatech7402 at gmail.com> wrote:
>> >
>> > Hello all ^^
>> >
>> > I'm puzzled with a really weird RIPng default gateway propagation
>> problem.
>> > I don't quite understand what's happening. Here is what happens ...
>> >
>> > Network topology :
>> >
>> > PC1---Router1---Router2----InternetGateway---z
>> >
>> > RIPng enabled on PC1, Router1, Router2
>> > Router2 has a static IPv6 DG ( Default Gateway ) to InternetGateway
>> > Router1 has no static IPv6 DG, and no kernel{learn} directive.
>> >
>> > Router2=Ubuntu14.04 LTS, Router1=raspbian Wheezy, bird = last
>> version, compiled from sources
>> > link-local addresses replaces with symbolic names ( ie
>> [fe80::Router1] )
>> >
>> > Something really strange seems to happen :
>> >
>> > . Router2 gets this routing table :
>> >
>> > default via InternetGateway dev eth0 proto static metric 1
>> > default via [fe80::Router1] dev eth1 proto bird metric 1024
>>
> Did you try commented out the learn directive in protocol kernel? Did the
> metric 1024 disappear?
>
> >
>> > But Router1 isn't announcing any IPv6 DefaultGateway, just ::/0
>> metric 16 ( ie it is poisoning the route ).
>> > ( I checked using Wireshark ).
>> >
>> > Is there a bug that transforms a received "::/0 metric 16" into a
>> "default via [fe80::Router1] dev eth1 proto bird metric 1024" route
>> ?
>>
> Probably not.
>
> >
>> > Here is Router2 bird6.conf file :
>> >
>> > -------------------------------------------------
>> > log syslog all;
>> > debug protocols all;
>> > #log stderr all;
>> > #log "tmp" all;
>> >
>> > router id 192.168.4.1;
>> > protocol kernel {
>> > learn;
>> > scan time 20;
>> > export all;
>> > import all;
>> > }
>> >
>> > protocol direct {
>> > #interface "eth0";
>> > }
>> >
>> > protocol device {
>> > scan time 10;
>> > }
>> >
>> > protocol rip {
>> > debug all;
>> > port 521;
>> > interface "*" { mode multicast; ttl security on; };
>> > honor neighbor;
>> > authentication none;
>> > import all;
>> > export all;
>> > }
>> > -------------------------------------------------------------
>> >
>> > I managed to solve the problem, by having Router2 drop incomming
>> ::/0 announcements :
>> >
>> > ---------------------------------------------------------
>> > import filter { # This block filters ::/0 in
>> > if net ~ [ ::/0 ] then
>> > reject "ripng:rejected:DG";
>> > else
>> > accept "ripng:accepted:not-DG";
>> > };
>> >
>> > export all;
>>
> Do you use filter at rip or at kernel protocol?
>
> >
>> > ---------------------------------------------------------
>> >
>> > the problem is solved, yet it puzzles me.
>> > This is really strange. Does anybody understand what is happening
>> ??
>>
>
> Pavel
>
>
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