Incomplete bgp connection can close a completed bgp connection

[生.]

Hello,

I have found an issue in Bird 2.0.8.
If the tcp connection is not completely, then a new bgp conntection is success.
When the hold timer of the first tcp connection is expired, it will close both 
of the connection.
             router1      
                      
            router2
           192.168.1.100      
                192.168.1.200
first&nbsp; &nbsp; &nbsp; &nbsp; <----------------------------------------(tcp 
syn)
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 
-----------------------------------------&gt; (tcp syn ack)
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 
&nbsp;<---------------------------------------------(tcp ack, open)
second&nbsp; &nbsp;<---------------------------------------------&gt; (tcp )
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 
&nbsp;<---------------------------------------------&gt; (bgp established)
first holdtime expire
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 
&nbsp;<---------------------------------------------&nbsp; &nbsp;(bgp close 
first)&nbsp; &nbsp; &nbsp;
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 
<---------------------------------------------&nbsp; &nbsp;(bgp close 
second)&nbsp; &nbsp; &nbsp;
&nbsp;The full packet is in the attachment, is this a correct operation ?

bgp.pcapng
Description: Binary data