Set SRC PREF for routes when injecting routes to kernel

[Michael Rack]

Uppps, okay sorry, that is a attribute on a per route / prefix basis as i
want to.

protocol bgp ibgp4_bgp02 {
>         description "Internal BGP to BGP02";
>         local 10.0.0.1 as 65501;
>         neighbor 10.0.0.2 as 65502;
>         ipv4 {
>                 export all;
>                 import filter { krt_prefsrc = 78.22.46.1; };

                table ibgp4;
>         };
> }


perfect, thank you.

2018-01-15 10:54 GMT+01:00 Michael Rack <mail at michaelrack.de>:

> Perfect, that will do what i want. Thank you.
>
> But will it not be better to have that setting on an in-filter per route
> basis?
>
> On MIKROTIK BGP / OSPF you do that on a per route basis, so you can do
> some fancy things like "if routes learned from peer 1 set src to x.x.x.x,
> if learned from peer 2 set src to y.y.y.y".
>
> 2018-01-15 9:36 GMT+01:00 Alexander Zubkov <green at qrator.net>:
>
>> Hi,
>>
>> You can set krt_prefsrc when exporting to kernel in Linux.
>>
>> On Mon, Jan 15, 2018 at 8:49 AM, Michael Rack <mail at michaelrack.de>
>> wrote:
>>
>>> Hi all!
>>>
>>> Is it possible to set the SRC-Attribute on routes that will be inserted
>>> to kernel?
>>>
>>> I have private /31 networks to connect to other routers in my network
>>> and i don't want to see these private ip-addesses on a traceroute from a
>>> network with public ips. Every Router have a public IP-Address on his
>>> Loopback-Interface, so i can use that address for ICMP-Replies.
>>>
>>> Lets say 78.22.45.0/24 and 78.22.46.0/24 is my public network address
>>> space.
>>>
>>> router#1.lo = 78.22.46.1/32
>>> router#1.eth1 = 10.0.0.1/31
>>>  ----- eBGP -----
>>> router#2.eth1 = 10.0.0.2/31
>>> router#2.eth2 = 78.22.45.1/24
>>> router#1.lo = 78.22.46.2/32
>>>
>>> On traceroutes i like to reply from a specific ip-address. In case of
>>> router#1 with 78.22.46.1 and for router#2 with 78.22.46.2
>>>
>>> On Unix / Linux you can accomplish that feature with
>>> router#1# ip route add 78.22.45.0/24 via 10.0.0.2 src 78.22.46.1
>>>
>>> So how can i set "src" with bird on import route filtering process?
>>>
>>
>>
>
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