LAST_ACK

tcp4       0      0  192.168.2.104.56448    42.156.210.123.80      LAST_ACK
tcp4       0      41 192.168.2.104.56422    135.104.24.16.80       LAST_ACK
tcp4       0      0  192.168.2.104.56421    135.104.24.16.80       LAST_ACK
tcp4       0      0  192.168.2.104.56420    135.104.24.16.80       LAST_ACK
tcp4       0      0  192.168.2.104.56400    106.185.33.91.8388     LAST_ACK
tcp4       0      1  192.168.2.104.56392    113.108.212.116.80     LAST_ACK
tcp4       0      0  192.168.2.104.56387    68.232.44.121.80       LAST_ACK
tcp4       0      2  192.168.2.104.56386    68.232.44.121.80       LAST_ACK