Bird 1.4.5 add-path crash

Martin Pels m.pels at
Tue Jun 30 17:24:20 CEST 2015


I'm seeing Bird 1.4.5 crash with a segmentation fault when receiving
routes from a peer with add-path enabled.

BIRD config:

protocol bgp {
        description "Juniper";
        local as 65065;
        neighbor a:b:c:a as 65065;
        add paths rx;
        gateway direct;
        import none;
        export none;

The other side is a Juniper BGP speaker (JunOS 12.3R7), with the
following config:

neighbor a:b:c:d {
    family inet6 {
        unicast {
            add-path {
                send {
                    path-count 2;
    peer-as 65065;

Session establishment completes, but when the Juniper sends routes Bird
crashes. I can provide a core dump and pcap trace if needed.

Kind regards,

Martin Pels
CDN Network Engineer
LeaseWeb Technologies B.V.

T: +31 20 316 0232
E: m.pels at

Luttenbergweg 8, 1101 EC Amsterdam, Netherlands

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