Why do I see SYN_RECV state on httpd port 80 after client establishes a connection?

Issue

• Why do I see SYN_RECV state on httpd port 80 after client establishes a connection?

Sample log:

client(192.168.122.22)
[root@client /]# telnet 192.168.122.77 80 &
[1] 6325
[root@client /]# Trying 192.168.122.77...
Connected to 192.168.122.77.
Escape character is '^]'.


[1]+  Stopped                 telnet 192.168.122.77 80
[root@client /]# netstat -antp | grep :80
tcp        0      0 192.168.122.22:60359        192.168.122.77:80           ESTABLISHED 6325/telnet         
[root@client /]# 

Note: The three-way handshake is completed.

server(192.168.122.77)
[root@server /]# netstat -antp | grep :80
tcp        0      0 192.168.122.77:80       192.168.122.22:60359    SYN_RECV    -                   
tcp6       0      0 :::80                   :::*                    LISTEN      2432/httpd          
[root@server /]#