I configured l3vpn in BIRD and I was able to see the routes are learnt and advertised based on RT.

All the routes in this VRF are advertised with RT (1:11) to neighbors.

I have a use case in which I want to apply different RT for different routes belonging to the same VRF.

For example,

I have the following prefixes in this VRF "vrf2".

I would like to add different "export route target" as below for routes belong to same VRF

Please let me know if there is any way to achieve this with BIRD configuration.

protocol l3vpn l3vpn2 {
        vrf "vrf2";
        ipv4 { table vrf2v4; };
        ipv6 { table vrf2v6; };
        vpn4 { table vpntab4; };
        vpn6 { table vpntab6; };
        mpls {
                label policy aggregate;
                label range vrfrange;
        };

        rd 1:11;
        import target [(rt, 1, 11)];
        export target [(rt, 1, 11)];
}

Thanks,

Ramanathan