time T [TCP Keep-Alive] srcport -> dstport [PSH,ACK] Seq=1051295 ACK=101003 Win=263520 Len=1 time T+1.5000 [TCP Keep-Alive] srcport -> dstport [PSH,ACK] Seq=10512965 ACK=100003 Win=263520 Len=1 time T+3.000 [TCP Keep-Alive] srcport -> dstport [PSH,ACK] Seq=1051295 ACK=101003 Win=263520 Len=1 time T+6.000 [TCP Keep-Alive] srcport -> dstport [PSH,ACK] Seq=1051295 ACK=101003 Win=263520 Len=1 time T+12.000 [TCP Keep-Alive] srcport -> dstport [PSH,ACK] Seq=1051295 ACK=101003 Win=263520 Len=1