some configuration questions

[Michael Renzmann]

Hi all.

I've some questions regarding the configuration of bird.

1. I have a box with lots of (virtual) network interfaces. All those
interfaces use the eth-namespace (and I can not change this unfortunately). I
want bird to use eth0 with RIP in broadcast mode and to exclude every other
interface which name matches "eth*". Would this following be right for that
purpose?

protocol rip {
	[...]
	interface "eth0" { mode broadcast; };
	interface "eth*" { quiet; };
	[...]
}

2. How do I tell bird not to accept and not to send any RIP requests/updates
from/to given interfaces? If I understood the documentation correctly, "quiet"
tells not to send anything (but to receive) and "nolisten" tells not to listen
(but to send) to an interface. Is there a mode that permits both?

3. I'm using some vtun connection between hosts in the local network. Vtun is
a package that sets up virtual ip tunnels between two hosts and is able to
shape traffic and to encrypt the tunnel data for each connection seperatly
(for more information: vtun.sourceforge.net). I use the tun-devices for the
connections between the hosts, which is part of the vtun package. When I try
to tell bird to broadcast RIP packages using one of the tun devices in a
system, it tells the following:

 Apr 16 19:38:38 (none) daemon.err bird: rip1: rip is not defined over
unnumbered links
 Apr 16 19:38:38 (none) daemon.warn bird: sk_open: bind: Cannot assign
requested address
 Apr 16 19:38:38 (none) daemon.warn bird: rip1: could not listen on tun1

birdctl's "show interfaces" command shows the following data:

bird> show interfaces
 lo up (index=1)
         MultiAccess AdminUp LinkUp Loopback Ignored MTU=3924
         127.0.0.1/8 (Primary, broadcast 127.255.255.255, scope host)
 eth0 up (index=2)
         MultiAccess Broadcast Multicast AdminUp LinkUp MTU=1500
         192.168.2.102/24 (Primary, broadcast 192.168.2.255, scope site)
 eth1 up (index=3)
         MultiAccess Broadcast Multicast AdminUp LinkUp MTU=1500
         10.0.0.102/24 (Primary, broadcast 10.0.0.255, scope site)
 tun1 up (index=4)
         PtP Multicast AdminUp LinkUp MTU=1500
         10.255.255.251/32 (Primary, broadcast 10.255.255.252, opposite
10.255.255.252, scope site, unnumbered)

In addition, this is what ifconfig says:

# ifconfig
        eth0      Link encap:Ethernet  HWaddr 00:E0:4C:88:00:12  
                  inet addr:192.168.2.102  Bcast:192.168.2.255 
Mask:255.255.255.0
                  UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
                  RX packets:48 errors:0 dropped:0 overruns:0 frame:0
                  TX packets:63 errors:0 dropped:0 overruns:2 carrier:0
                  collisions:0 txqueuelen:100 
                  Interrupt:11 Base address:0xe000 

        eth1      Link encap:Ethernet  HWaddr 00:02:2D:00:D5:E3  
                  inet addr:10.0.0.102  Bcast:10.0.0.255  Mask:255.255.255.0
                  UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
                  RX packets:46 errors:0 dropped:0 overruns:0 frame:0
                  TX packets:49 errors:0 dropped:0 overruns:0 carrier:0
                  collisions:0 txqueuelen:100 
                  Interrupt:5 Base address:0x100 

        lo        Link encap:Local Loopback  
                  inet addr:127.0.0.1  Mask:255.0.0.0
                  UP LOOPBACK RUNNING  MTU:3924  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:0 

        tun1      Link encap:Point-to-Point Protocol  
                  inet addr:10.255.255.251  P-t-P:10.255.255.252 
Mask:255.255.255.255
                  UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1500  Metric:1
                  RX packets:2 errors:0 dropped:0 overruns:0 frame:0
                  TX packets:2 errors:0 dropped:0 overruns:0 carrier:0
                  collisions:0 txqueuelen:10 

What is meant by "unnumbered" (as told by bird itself and birdctl)? What can
be done to set tun1 to "numbered" or to force bird to use the tun-devices for
sharing routes with the other hosts?

Bye, Mike
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  Development - Wireless Solutions
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