possible nping icmp sequence number bug

[Nping User <npinguser () gmail com>]

I'm running fresh Ubuntu 14.04 LTS 64-bit on VMware Player (Host Windows 7
64-bit) and getting wrong icmp sequence number for second seq if -c > 3:

user@ubuntu:~$ sudo nping -c 3 8.8.8.8

Starting Nping 0.6.46 ( http://nmap.org/nping ) at 2014-04-24 12:40 EEST
SENT (0.0128s) ICMP [10.5.150.62 > 8.8.8.8 Echo request (type=8/code=0)
id=2513 seq=1] IP [ttl=64 id=45252 iplen=28 ]
RCVD (0.0331s) ICMP [8.8.8.8 > 10.5.150.62 Echo reply (type=0/code=0)
id=2513 seq=1] IP [ttl=49 id=0 iplen=28 ]
SENT (1.0133s) ICMP [10.5.150.62 > 8.8.8.8 Echo request (type=8/code=0)
id=2513 seq=3] IP [ttl=64 id=45252 iplen=28 ]
RCVD (1.0332s) ICMP [8.8.8.8 > 10.5.150.62 Echo reply (type=0/code=0)
id=2513 seq=3] IP [ttl=49 id=0 iplen=28 ]
SENT (2.0150s) ICMP [10.5.150.62 > 8.8.8.8 Echo request (type=8/code=0)
id=2513 seq=3] IP [ttl=64 id=45252 iplen=28 ]
RCVD (2.0351s) ICMP [8.8.8.8 > 10.5.150.62 Echo reply (type=0/code=0)
id=2513 seq=3] IP [ttl=49 id=0 iplen=28 ]

Max rtt: 19.954ms | Min rtt: 19.714ms | Avg rtt: 19.836ms
Raw packets sent: 3 (84B) | Rcvd: 3 (138B) | Lost: 0 (0.00%)
Nping done: 1 IP address pinged in 2.04 seconds

I can't reproduce this with host machine. Is this bug or is there something
wrong with my virtual?
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