need more configuration after running intangd?

[saintthor]

intangd is running. but can not open any gfwed site by domain or by ip.

logs:

$ cat /var/log/intangd.log
1515489601.565875 [INFO] Previous version 0, current version 7
1515489601.565908 [INFO] Deleting redis DB due to version update.
1515489601.565924 [WARNING] Failed to delete redis db. errno: 2
1515489601.565955 [INFO] Starting redis server.
1515489602.844626 [INFO] Building sync connection with redis server.
1515489602.844777 [INFO] Sync connection built successfully.
1515489602.844862 [INFO] Loading historical results from redis.
1515489602.845000 [INFO] Loading TTL from redis.
1515489602.845083 [INFO] Async connection built successfully.
1515489602.846181 [INFO] Connecting to TCP DNS server.
1515489730.073424 [ERROR] Cannot connect to TCP DNS server. Retrying...
1515489849.561933 [INFO] Triggered Type 1 Reset! 1694607552_62096_1545149544_20480_11. LAST REQ: GET 6.djdq.org/ HTTP/1.1
1515489854.480034 [INFO] [EVAL] STRATEGY FAILED 2. HTTP TRIGGERED TYPE 1 RESET. 1694607552_62096_1545149544_20480_11
1515489854.480488 [INFO] [EVAL] HTTP REQUEST SENT DURING 90 SEC. 1694607552_63120_1545149544_20480_10
1515489855.180813 [INFO] [EVAL] HTTP REQUEST SENT DURING 90 SEC. 1694607552_63632_1545149544_20480_17
1515489858.329400 [ERROR] Cannot connect to TCP DNS server. Retrying...
1515489941.067904 [INFO] [EVAL] STRATEGY FAILED 1. HTTP NO RESPONSE. 1694607552_63632_1545149544_20480_17
1515489986.585397 [ERROR] Cannot connect to TCP DNS server. Retrying...
1515490114.841462 [ERROR] Cannot connect to TCP DNS server. Retrying...
1515490243.097414 [ERROR] Cannot connect to TCP DNS server. Retrying...
1515490243.097456 [ERROR] Reached maximum retry count.
1515490371.353615 [ERROR] Cannot connect to TCP DNS server. Retrying...
1515490371.353809 [ERROR] Reached maximum retry count.
1515490391.221063 [INFO] [EVAL] STRATEGY SUCCEEDED. 1694607552_32449_1764479179_20480_1
1515490392.250799 [INFO] [EVAL] STRATEGY SUCCEEDED. 1694607552_52433_505925835_20480_11
1515490392.702298 [INFO] [EVAL] STRATEGY SUCCEEDED. 1694607552_15531_4029337803_20480_10

[saintthor]

my system is ubuntu 16.04.