Roy Tam says to YSITD
HKBN表示no route to host # lft -A -N -m3 -l2 91.108.56.189:443 Tracing ....********** TTL LFT trace to 91.108.56.189:443/tcp 2 [AS?] [NULL] 10.239.65.41 11.7ms 3 [9269] [HKBN] 014199254205.ctinets.com (14.199.254.205) 8.0ms 4 [9269] [HKBN] 014136129122.ctinets.com (14.136.129.122) 1.2ms 5 [38726] [HKIX-HK] sggs2-10G.hkix.net (123.255.90.102) 3.4ms ** [443/tcp no reply from target] Try advanced options (use -VV to see packets).