[0] 0.97.189.137.in-addr.arpa.: domain name does not exist
[0] 1.97.189.137.in-addr.arpa.: domain name does not exist
[0] 2.97.189.137.in-addr.arpa.: domain name does not exist
[0] 3.97.189.137.in-addr.arpa.: domain name does not exist
[0] 4.97.189.137.in-addr.arpa.: domain name does not exist
[43200] 5.97.189.137.in-addr.arpa. domain name pointer comtechsw.ie.cuhk.edu.hk
[43200] 6.97.189.137.in-addr.arpa. domain name pointer g33fw.ie.cuhk.edu.hk
[0] 7.97.189.137.in-addr.arpa.: domain name does not exist
[43200] 8.97.189.137.in-addr.arpa. domain name pointer tlab2pc01.ie.cuhk.edu.hk
[43200] 9.97.189.137.in-addr.arpa. domain name pointer iestp7.ie.cuhk.edu.hk
[43200] 10.97.189.137.in-addr.arpa. domain name pointer 725demo.ie.cuhk.edu.hk
[43200] 11.97.189.137.in-addr.arpa. domain name pointer iestp104.ie.cuhk.edu.hk
[43200] 12.97.189.137.in-addr.arpa. domain name pointer kanserver.ie.cuhk.edu.hk
[43200] 13.97.189.137.in-addr.arpa. domain name pointer iestp32.ie.cuhk.edu.hk
[43200] 14.97.189.137.in-addr.arpa. domain name pointer iestp25.ie.cuhk.edu.hk
[43200] 15.97.189.137.in-addr.arpa. domain name pointer tlab2-ser.ie.cuhk.edu.hk
[43200] 16.97.189.137.in-addr.arpa. domain name pointer tlab2cam.ie.cuhk.edu.hk
[43200] 17.97.189.137.in-addr.arpa. domain name pointer s1-803.ie.cuhk.edu.hk
[43200] 18.97.189.137.in-addr.arpa. domain name pointer s2-803.ie.cuhk.edu.hk
[43200] 19.97.189.137.in-addr.arpa. domain name pointer iesun42t.ie.cuhk.edu.hk
[43200] 20.97.189.137.in-addr.arpa. domain name pointer 1003fyp1.ie.cuhk.edu.hk
[43200] 21.97.189.137.in-addr.arpa. domain name pointer muaser.ie.cuhk.edu.hk
[0] 22.97.189.137.in-addr.arpa.: domain name does not exist
[0] 23.97.189.137.in-addr.arpa.: domain name does not exist
[43200] 24.97.189.137.in-addr.arpa. domain name pointer iestp54.ie.cuhk.edu.hk
[43200] 25.97.189.137.in-addr.arpa. domain name pointer iestp55.ie.cuhk.edu.hk
[43200] 26.97.189.137.in-addr.arpa. domain name pointer ieoff0.ie.cuhk.edu.hk
[43200] 27.97.189.137.in-addr.arpa. domain name pointer iestp57.ie.cuhk.edu.hk
[43200] 28.97.189.137.in-addr.arpa. domain name pointer ieoffpc1.ie.cuhk.edu.hk
[43200] 29.97.189.137.in-addr.arpa. domain name pointer lokfyp1.ie.cuhk.edu.hk
[43200] 30.97.189.137.in-addr.arpa. domain name pointer lokfyp2.ie.cuhk.edu.hk
[43200] 31.97.189.137.in-addr.arpa. domain name pointer sunlight01.ie.cuhk.edu.hk
[43200] 32.97.189.137.in-addr.arpa. domain name pointer sunlight02.ie.cuhk.edu.hk
[43200] 33.97.189.137.in-addr.arpa. domain name pointer optlx21.ie.cuhk.edu.hk
[43200] 34.97.189.137.in-addr.arpa. domain name pointer optlx22.ie.cuhk.edu.hk
[0] 35.97.189.137.in-addr.arpa.: domain name does not exist
[43200] 36.97.189.137.in-addr.arpa. domain name pointer compc20.ie.cuhk.edu.hk
[0] 37.97.189.137.in-addr.arpa.: domain name does not exist
[0] 38.97.189.137.in-addr.arpa.: domain name does not exist
[0] 39.97.189.137.in-addr.arpa.: domain name does not exist
[0] 40.97.189.137.in-addr.arpa.: domain name does not exist
[43200] 41.97.189.137.in-addr.arpa. domain name pointer iilabs1.ie.cuhk.edu.hk
[43200] 42.97.189.137.in-addr.arpa. domain name pointer 724s1.ie.cuhk.edu.hk
[43200] 43.97.189.137.in-addr.arpa. domain name pointer 724s2.ie.cuhk.edu.hk
[43200] 44.97.189.137.in-addr.arpa. domain name pointer rlabsrv9.ie.cuhk.edu.hk
[43200] 45.97.189.137.in-addr.arpa. domain name pointer rlabsrv10.ie.cuhk.edu.hk
[43200] 46.97.189.137.in-addr.arpa. domain name pointer 726c-srv1.ie.cuhk.edu.hk
[43200] 47.97.189.137.in-addr.arpa. domain name pointer enmpc02.enmpc.cuhk.edu.hk
[43200] 48.97.189.137.in-addr.arpa. domain name pointer 802srv1.ie.cuhk.edu.hk
[43200] 49.97.189.137.in-addr.arpa. domain name pointer optlx19.ie.cuhk.edu.hk
[43200] 50.97.189.137.in-addr.arpa. domain name pointer 804fyp2004a.ie.cuhk.edu.hk
[43200] 51.97.189.137.in-addr.arpa. domain name pointer 804fyp2004b.ie.cuhk.edu.hk
[0] 52.97.189.137.in-addr.arpa.: domain name does not exist
[0] 53.97.189.137.in-addr.arpa.: domain name does not exist
[0] 54.97.189.137.in-addr.arpa.: domain name does not exist
[0] 55.97.189.137.in-addr.arpa.: domain name does not exist
[0] 56.97.189.137.in-addr.arpa.: domain name does not exist
[0] 57.97.189.137.in-addr.arpa.: domain name does not exist
[0] 58.97.189.137.in-addr.arpa.: domain name does not exist
[0] 59.97.189.137.in-addr.arpa.: domain name does not exist
[0] 60.97.189.137.in-addr.arpa.: domain name does not exist
[0] 61.97.189.137.in-addr.arpa.: domain name does not exist
[0] 62.97.189.137.in-addr.arpa.: domain name does not exist
[0] 63.97.189.137.in-addr.arpa.: domain name does not exist
[43200] 64.97.189.137.in-addr.arpa. domain name pointer fastsw2.ie.cuhk.edu.hk
[0] 65.97.189.137.in-addr.arpa.: domain name does not exist
[43200] 66.97.189.137.in-addr.arpa. domain name pointer peflinux0.ie.cuhk.edu.hk
[43200] 67.97.189.137.in-addr.arpa. domain name pointer peflinux1.ie.cuhk.edu.hk
[43200] 68.97.189.137.in-addr.arpa. domain name pointer fastsw14.ie.cuhk.edu.hk
[0] 69.97.189.137.in-addr.arpa.: domain name does not exist
[43200] 70.97.189.137.in-addr.arpa. domain name pointer peflinux4.ie.cuhk.edu.hk
[43200] 71.97.189.137.in-addr.arpa. domain name pointer janpc1.ie.cuhk.edu.hk
[43200] 72.97.189.137.in-addr.arpa. domain name pointer fastsw9.ie.cuhk.edu.hk
[0] 73.97.189.137.in-addr.arpa.: domain name does not exist
[43200] 74.97.189.137.in-addr.arpa. domain name pointer fastsw7.ie.cuhk.edu.hk
[43200] 75.97.189.137.in-addr.arpa. domain name pointer banpc0.ie.cuhk.edu.hk
[43200] 76.97.189.137.in-addr.arpa. domain name pointer bbsw-c3200.ie.cuhk.edu.hk
[43200] 77.97.189.137.in-addr.arpa. domain name pointer banpc16.ie.cuhk.edu.hk
[43200] 78.97.189.137.in-addr.arpa. domain name pointer banpc17.ie.cuhk.edu.hk
[43200] 79.97.189.137.in-addr.arpa. domain name pointer banpc18.ie.cuhk.edu.hk
[0] 80.97.189.137.in-addr.arpa.: domain name does not exist
[43200] 81.97.189.137.in-addr.arpa. domain name pointer hkoi.ie.cuhk.edu.hk
[43200] 82.97.189.137.in-addr.arpa. domain name pointer taihu.ie.cuhk.edu.hk
[43200] 83.97.189.137.in-addr.arpa. domain name pointer rlabsrv1.ie.cuhk.edu.hk
[43200] 84.97.189.137.in-addr.arpa. domain name pointer rlabsrv2.ie.cuhk.edu.hk
[43200] 85.97.189.137.in-addr.arpa. domain name pointer mmlab.ie.cuhk.edu.hk
[43200] 86.97.189.137.in-addr.arpa. domain name pointer phoenix.ie.cuhk.edu.hk
[43200] 87.97.189.137.in-addr.arpa. domain name pointer monica.ie.cuhk.edu.hk
[43200] 88.97.189.137.in-addr.arpa. domain name pointer 804fyp05a.ie.cuhk.edu.hk
[43200] 89.97.189.137.in-addr.arpa. domain name pointer adrainfyp.ie.cuhk.edu.hk
[43200] 90.97.189.137.in-addr.arpa. domain name pointer vipc3.ie.cuhk.edu.hk
[43200] 91.97.189.137.in-addr.arpa. domain name pointer peflinux11.ie.cuhk.edu.hk
[43200] 92.97.189.137.in-addr.arpa. domain name pointer peflinux12.ie.cuhk.edu.hk
[43200] 93.97.189.137.in-addr.arpa. domain name pointer peflinux13.ie.cuhk.edu.hk
[43200] 94.97.189.137.in-addr.arpa. domain name pointer peflinux14.ie.cuhk.edu.hk
[43200] 95.97.189.137.in-addr.arpa. domain name pointer peflinux15.ie.cuhk.edu.hk
[43200] 96.97.189.137.in-addr.arpa. domain name pointer peflinux16.ie.cuhk.edu.hk
[43200] 97.97.189.137.in-addr.arpa. domain name pointer peflinux17.ie.cuhk.edu.hk
[43200] 98.97.189.137.in-addr.arpa. domain name pointer 805fyp1.ie.cuhk.edu.hk
[43200] 99.97.189.137.in-addr.arpa. domain name pointer 805fyp2.ie.cuhk.edu.hk
[43200] 100.97.189.137.in-addr.arpa. domain name pointer tlab-la2.ie.cuhk.edu.hk
[43200] 101.97.189.137.in-addr.arpa. domain name pointer aipl.ie.cuhk.edu.hk
[0] 102.97.189.137.in-addr.arpa.: domain name does not exist
[0] 103.97.189.137.in-addr.arpa.: domain name does not exist
[0] 104.97.189.137.in-addr.arpa.: domain name does not exist
[0] 105.97.189.137.in-addr.arpa.: domain name does not exist
[0] 106.97.189.137.in-addr.arpa.: domain name does not exist
[0] 107.97.189.137.in-addr.arpa.: domain name does not exist
[0] 108.97.189.137.in-addr.arpa.: domain name does not exist
[43200] 109.97.189.137.in-addr.arpa. domain name pointer compc3.ie.cuhk.edu.hk
[0] 110.97.189.137.in-addr.arpa.: domain name does not exist
[43200] 111.97.189.137.in-addr.arpa. domain name pointer netprog.ie.cuhk.edu.hk
[0] 112.97.189.137.in-addr.arpa.: domain name does not exist
[43200] 113.97.189.137.in-addr.arpa. domain name pointer comtech3.ie.cuhk.edu.hk
[43200] 114.97.189.137.in-addr.arpa. domain name pointer cmodem.ie.cuhk.edu.hk
[0] 115.97.189.137.in-addr.arpa.: domain name does not exist
[0] 116.97.189.137.in-addr.arpa.: domain name does not exist
[43200] 117.97.189.137.in-addr.arpa. domain name pointer pefpc18.ie.cuhk.edu.hk
[0] 118.97.189.137.in-addr.arpa.: domain name does not exist
[43200] 119.97.189.137.in-addr.arpa. domain name pointer 804gw.ie.cuhk.edu.hk
[0] 120.97.189.137.in-addr.arpa.: domain name does not exist
[0] 121.97.189.137.in-addr.arpa.: domain name does not exist
[43200] 122.97.189.137.in-addr.arpa. domain name pointer compc9.ie.cuhk.edu.hk
[0] 123.97.189.137.in-addr.arpa.: domain name does not exist
[0] 124.97.189.137.in-addr.arpa.: domain name does not exist
[43200] 125.97.189.137.in-addr.arpa. domain name pointer compc10.ie.cuhk.edu.hk
[43200] 126.97.189.137.in-addr.arpa. domain name pointer compc11.ie.cuhk.edu.hk
[43200] 127.97.189.137.in-addr.arpa. domain name pointer compc12.ie.cuhk.edu.hk
[43200] 128.97.189.137.in-addr.arpa. domain name pointer compc13.ie.cuhk.edu.hk
[0] 129.97.189.137.in-addr.arpa.: domain name does not exist
[0] 130.97.189.137.in-addr.arpa.: domain name does not exist
[0] 131.97.189.137.in-addr.arpa.: domain name does not exist
[0] 132.97.189.137.in-addr.arpa.: domain name does not exist
[0] 133.97.189.137.in-addr.arpa.: domain name does not exist
[0] 134.97.189.137.in-addr.arpa.: domain name does not exist
[0] 135.97.189.137.in-addr.arpa.: domain name does not exist
[0] 136.97.189.137.in-addr.arpa.: domain name does not exist
[0] 137.97.189.137.in-addr.arpa.: domain name does not exist
[0] 138.97.189.137.in-addr.arpa.: domain name does not exist
[0] 139.97.189.137.in-addr.arpa.: domain name does not exist
[0] 140.97.189.137.in-addr.arpa.: domain name does not exist
[43200] 141.97.189.137.in-addr.arpa. domain name pointer pefsun4.ie.cuhk.edu.hk
[43200] 142.97.189.137.in-addr.arpa. domain name pointer pefsun5.ie.cuhk.edu.hk
[43200] 143.97.189.137.in-addr.arpa. domain name pointer compc6.ie.cuhk.edu.hk
[43200] 144.97.189.137.in-addr.arpa. domain name pointer compc14.ie.cuhk.edu.hk
[43200] 145.97.189.137.in-addr.arpa. domain name pointer compc7.ie.cuhk.edu.hk
[43200] 146.97.189.137.in-addr.arpa. domain name pointer rlabsrv8.ie.cuhk.edu.hk
[43200] 147.97.189.137.in-addr.arpa. domain name pointer mobitecs1.ie.cuhk.edu.hk
[43200] 148.97.189.137.in-addr.arpa. domain name pointer mobitecs2.ie.cuhk.edu.hk
[0] 149.97.189.137.in-addr.arpa.: domain name does not exist
[43200] 150.97.189.137.in-addr.arpa. domain name pointer 803prt.ie.cuhk.edu.hk
[0] 151.97.189.137.in-addr.arpa.: domain name does not exist
[43200] 152.97.189.137.in-addr.arpa. domain name pointer iilabsun1.ie.cuhk.edu.hk
[0] 153.97.189.137.in-addr.arpa.: domain name does not exist
[0] 154.97.189.137.in-addr.arpa.: domain name does not exist
[0] 155.97.189.137.in-addr.arpa.: domain name does not exist
[0] 156.97.189.137.in-addr.arpa.: domain name does not exist
[0] 157.97.189.137.in-addr.arpa.: domain name does not exist
[0] 158.97.189.137.in-addr.arpa.: domain name does not exist
[43200] 159.97.189.137.in-addr.arpa. domain name pointer dectp12.ie.cuhk.edu.hk
[0] 160.97.189.137.in-addr.arpa.: domain name does not exist
[0] 161.97.189.137.in-addr.arpa.: domain name does not exist
[0] 162.97.189.137.in-addr.arpa.: domain name does not exist
[43200] 163.97.189.137.in-addr.arpa. domain name pointer radio02.ie.cuhk.edu.hk
[43200] 164.97.189.137.in-addr.arpa. domain name pointer radio04.ie.cuhk.edu.hk
[0] 165.97.189.137.in-addr.arpa.: domain name does not exist
[0] 166.97.189.137.in-addr.arpa.: domain name does not exist
[0] 167.97.189.137.in-addr.arpa.: domain name does not exist
[0] 168.97.189.137.in-addr.arpa.: domain name does not exist
[0] 169.97.189.137.in-addr.arpa.: domain name does not exist
[0] 170.97.189.137.in-addr.arpa.: domain name does not exist
[43200] 171.97.189.137.in-addr.arpa. domain name pointer 701cam.ie.cuhk.edu.hk
[43200] 172.97.189.137.in-addr.arpa. domain name pointer radiosw1.ie.cuhk.edu.hk
[0] 173.97.189.137.in-addr.arpa.: domain name does not exist
[0] 174.97.189.137.in-addr.arpa.: domain name does not exist
[43200] 175.97.189.137.in-addr.arpa. domain name pointer webcam506.ie.cuhk.edu.hk
[43200] 176.97.189.137.in-addr.arpa. domain name pointer playpen-fw.ie.cuhk.edu.hk
[43200] 177.97.189.137.in-addr.arpa. domain name pointer playpen-srv1.ie.cuhk.edu.hk
[43200] 178.97.189.137.in-addr.arpa. domain name pointer playpen-srv2.ie.cuhk.edu.hk
[43200] 179.97.189.137.in-addr.arpa. domain name pointer playpen-srv3.ie.cuhk.edu.hk
[43200] 180.97.189.137.in-addr.arpa. domain name pointer 724lps.ie.cuhk.edu.hk
[43200] 181.97.189.137.in-addr.arpa. domain name pointer bansun08.ie.cuhk.edu.hk
[0] 182.97.189.137.in-addr.arpa.: domain name does not exist
[0] 183.97.189.137.in-addr.arpa.: domain name does not exist
[0] 184.97.189.137.in-addr.arpa.: domain name does not exist
[43200] 185.97.189.137.in-addr.arpa. domain name pointer banpc100.ie.cuhk.edu.hk
[0] 186.97.189.137.in-addr.arpa.: domain name does not exist
[43200] 187.97.189.137.in-addr.arpa. domain name pointer banpc3.ie.cuhk.edu.hk
[0] 188.97.189.137.in-addr.arpa.: domain name does not exist
[0] 189.97.189.137.in-addr.arpa.: domain name does not exist
[0] 190.97.189.137.in-addr.arpa.: domain name does not exist
[43200] 191.97.189.137.in-addr.arpa. domain name pointer mmlab8.ie.cuhk.edu.hk
[43200] 192.97.189.137.in-addr.arpa. domain name pointer bansun05.ie.cuhk.edu.hk
[43200] 193.97.189.137.in-addr.arpa. domain name pointer bansun06.ie.cuhk.edu.hk
[43200] 194.97.189.137.in-addr.arpa. domain name pointer banpc5.ie.cuhk.edu.hk
[43200] 195.97.189.137.in-addr.arpa. domain name pointer banpc6.ie.cuhk.edu.hk
[0] 196.97.189.137.in-addr.arpa.: domain name does not exist
[43200] 197.97.189.137.in-addr.arpa. domain name pointer banpc8.ie.cuhk.edu.hk
[43200] 198.97.189.137.in-addr.arpa. domain name pointer bslab4.ie.cuhk.edu.hk
[43200] 199.97.189.137.in-addr.arpa. domain name pointer bbljd2.ie.cuhk.edu.hk
[0] 200.97.189.137.in-addr.arpa.: domain name does not exist
[43200] 201.97.189.137.in-addr.arpa. domain name pointer rlabsrv7.ie.cuhk.edu.hk
[43200] 202.97.189.137.in-addr.arpa. domain name pointer banpc9.ie.cuhk.edu.hk
[43200] 203.97.189.137.in-addr.arpa. domain name pointer iestp61.ie.cuhk.edu.hk
[43200] 204.97.189.137.in-addr.arpa. domain name pointer sunlight03.ie.cuhk.edu.hk
[43200] 205.97.189.137.in-addr.arpa. domain name pointer rlabsrv3.ie.cuhk.edu.hk
[43200] 206.97.189.137.in-addr.arpa. domain name pointer rlabsrv4.ie.cuhk.edu.hk
[43200] 207.97.189.137.in-addr.arpa. domain name pointer rlabsrv5.ie.cuhk.edu.hk
[43200] 208.97.189.137.in-addr.arpa. domain name pointer rlabsrv6.ie.cuhk.edu.hk
[0] 209.97.189.137.in-addr.arpa.: domain name does not exist
[43200] 210.97.189.137.in-addr.arpa. domain name pointer bslab5.ie.cuhk.edu.hk
[0] 211.97.189.137.in-addr.arpa.: domain name does not exist
[0] 212.97.189.137.in-addr.arpa.: domain name does not exist
[0] 213.97.189.137.in-addr.arpa.: domain name does not exist
[43200] 214.97.189.137.in-addr.arpa. domain name pointer lanpc.ie.cuhk.edu.hk
[0] 215.97.189.137.in-addr.arpa.: domain name does not exist
[0] 216.97.189.137.in-addr.arpa.: domain name does not exist
[43200] 217.97.189.137.in-addr.arpa. domain name pointer lanpc3.ie.cuhk.edu.hk
[43200] 218.97.189.137.in-addr.arpa. domain name pointer bslab1.ie.cuhk.edu.hk
[0] 219.97.189.137.in-addr.arpa.: domain name does not exist
[43200] 220.97.189.137.in-addr.arpa. domain name pointer mediaw-sw1.ie.cuhk.edu.hk
[0] 221.97.189.137.in-addr.arpa.: domain name does not exist
[43200] 222.97.189.137.in-addr.arpa. domain name pointer mediaw-sw3.ie.cuhk.edu.hk
[0] 223.97.189.137.in-addr.arpa.: domain name does not exist
[0] 224.97.189.137.in-addr.arpa.: domain name does not exist
[0] 225.97.189.137.in-addr.arpa.: domain name does not exist
[0] 226.97.189.137.in-addr.arpa.: domain name does not exist
[43200] 227.97.189.137.in-addr.arpa. domain name pointer compc18.ie.cuhk.edu.hk
[0] 228.97.189.137.in-addr.arpa.: domain name does not exist
[43200] 229.97.189.137.in-addr.arpa. domain name pointer dectp9.ie.cuhk.edu.hk
[43200] 230.97.189.137.in-addr.arpa. domain name pointer dectp10.ie.cuhk.edu.hk
[0] 231.97.189.137.in-addr.arpa.: domain name does not exist
[43200] 232.97.189.137.in-addr.arpa. domain name pointer iegateb0.ie.cuhk.edu.hk
[43200] 233.97.189.137.in-addr.arpa. domain name pointer iegateb1.ie.cuhk.edu.hk
[43200] 234.97.189.137.in-addr.arpa. domain name pointer iegatea0.ie.cuhk.edu.hk
[43200] 235.97.189.137.in-addr.arpa. domain name pointer iegatea1.ie.cuhk.edu.hk
[43200] 236.97.189.137.in-addr.arpa. domain name pointer 1005pc1.ie.cuhk.edu.hk
[43200] 237.97.189.137.in-addr.arpa. domain name pointer 804prt.ie.cuhk.edu.hk
[43200] 238.97.189.137.in-addr.arpa. domain name pointer octopus97.ie.cuhk.edu.hk
[43200] 239.97.189.137.in-addr.arpa. domain name pointer banpc35.ie.cuhk.edu.hk
[43200] 240.97.189.137.in-addr.arpa. domain name pointer dectp11.ie.cuhk.edu.hk
[43200] 241.97.189.137.in-addr.arpa. domain name pointer banpc29.ie.cuhk.edu.hk
[0] 242.97.189.137.in-addr.arpa.: domain name does not exist
[0] 243.97.189.137.in-addr.arpa.: domain name does not exist
[43200] 244.97.189.137.in-addr.arpa. domain name pointer banpc20.ie.cuhk.edu.hk
[43200] 245.97.189.137.in-addr.arpa. domain name pointer bslab2.ie.cuhk.edu.hk
[0] 246.97.189.137.in-addr.arpa.: domain name does not exist
[0] 247.97.189.137.in-addr.arpa.: domain name does not exist
[43200] 248.97.189.137.in-addr.arpa. domain name pointer banpc24.ie.cuhk.edu.hk
[43200] 249.97.189.137.in-addr.arpa. domain name pointer banpc25.ie.cuhk.edu.hk
[43200] 250.97.189.137.in-addr.arpa. domain name pointer bansun07.ie.cuhk.edu.hk
[0] 251.97.189.137.in-addr.arpa.: domain name does not exist
[43200] 252.97.189.137.in-addr.arpa. domain name pointer iegateb2.ie.cuhk.edu.hk
[43200] 253.97.189.137.in-addr.arpa. domain name pointer iegatea2.ie.cuhk.edu.hk
[43200] 254.97.189.137.in-addr.arpa. domain name pointer router97.ie.cuhk.edu.hk
[0] 255.97.189.137.in-addr.arpa.: domain name does not exist