UseBridges 1 

Bridge obfs4 ip:port unique identifier of the bridge 
Bridge obfs4 ip:port unique identifier of the bridge 
Bridge obfs4 ip:port unique identifier of the bridge 

ClientTransportPlugin obfs4 exec /usr/bin/obfs4proxy

 Nov 21 06:27:00.109 [notice] Tor 0.3.2.10 (git-0edaa32732ec8930) running on Linux with Libevent 2.1.8-stable, OpenSSL 1.1.0g, Zlib 1.2.11, Liblzma 5.2.2, and Libzstd 1.3.3.
Nov 21 06:27:00.109 [notice] Tor can't help you if you use it wrong! Learn how to be safe at https://www.torproject.org/download/download#warning
Nov 21 06:27:00.109 [notice] Read configuration file "/etc/tor/torrc".
Nov 21 06:27:00.114 [notice] Scheduler type KIST has been enabled.
Nov 21 06:27:00.114 [notice] Opening Socks listener on 127.0.0.1:9050
Nov 21 06:27:00.000 [notice] Parsing GEOIP IPv4 file /usr/share/tor/geoip.
Nov 21 06:27:00.000 [notice] Parsing GEOIP IPv6 file /usr/share/tor/geoip6.
Nov 21 06:27:00.000 [notice] Bootstrapped 0%: Starting
Nov 21 06:27:01.000 [notice] Starting with guard context "bridges"
Nov 21 06:27:01.000 [notice] Bridge 'maenad' has both an IPv4 and an IPv6 address.  Will prefer using its IPv4 address (xxx.xxx.xxx.xxx) based on the configured Bridge address.
Nov 21 06:27:01.000 [notice] new bridge descriptor 'maenad' (cached): $xxxxxxxxxxxxxxxxxxxxxxxx~maenad at xxx.xxx.xxx.xxx
Nov 21 06:27:01.000 [notice] new bridge descriptor 'Unnamed' (cached): $xxxxxxxxxxxxxxxxxxxxxxxx~Unnamed at xxx.xxx.xxx.xxx
Nov 21 06:27:01.000 [notice] Delaying directory fetches: Pluggable transport proxies still configuring
Nov 21 06:27:02.000 [notice] Bootstrapped 80%: Connecting to the Tor network
Nov 21 06:27:02.000 [notice] Bootstrapped 85%: Finishing handshake with first hop
Nov 21 06:27:02.000 [warn] Proxy Client: unable to connect to xxx.xxx.xxx.xxx ("general SOCKS server failure")
Nov 21 06:27:03.000 [notice] Bridge 'maenad' has both an IPv4 and an IPv6 address.  Will prefer using its IPv4 address (xxx.xxx.xxx.xxx) based on the configured Bridge address.
Nov 21 06:27:03.000 [warn] Proxy Client: unable to connect to xxx.xxx.xxx.xxx ("general SOCKS server failure")
Nov 21 06:27:03.000 [warn] Proxy Client: unable to connect to xxx.xxx.xxx.xxx ("general SOCKS server failure")
Nov 21 06:27:03.000 [warn] Proxy Client: unable to connect to xxx.xxx.xxx.xxx ("general SOCKS server failure")
Nov 21 06:27:04.000 [notice] Bridge 'maenad' has both an IPv4 and an IPv6 address.  Will prefer using its IPv4 address (xxx.xxx.xxx.xxx) based on the configured Bridge address.

 ClientTransportPlugin obfs4 exec /usr/bin/obfs4proxy

Nov 21 13:21:49.722 [notice] Tor 0.3.2.10 (git-0edaa32732ec8930) running on Linux with Libevent 2.1.8-stable, OpenSSL 1.1.0g, Zlib 1.2.11, Liblzma 5.2.2, and Libzstd 1.3.3.
Nov 21 13:21:49.722 [notice] Tor can't help you if you use it wrong! Learn how to be safe at https://www.torproject.org/download/download#warning
Nov 21 13:21:49.722 [notice] Read configuration file "/etc/tor/torrc".
Nov 21 13:21:49.727 [notice] Scheduler type KIST has been enabled.
Nov 21 13:21:49.727 [notice] Opening Socks listener on 127.0.0.1:9050
Nov 21 13:21:49.000 [notice] Parsing GEOIP IPv4 file /usr/share/tor/geoip.
Nov 21 13:21:49.000 [notice] Parsing GEOIP IPv6 file /usr/share/tor/geoip6.
Nov 21 13:21:50.000 [notice] Bootstrapped 0%: Starting
Nov 21 13:21:50.000 [notice] Starting with guard context "bridges"
Nov 21 13:21:50.000 [notice] Bridge 'maenad' has both an IPv4 and an IPv6 address.  Will prefer using its IPv4 address (192.81.135.242:9003) based on the configured Bridge address.
Nov 21 13:21:50.000 [notice] new bridge descriptor 'maenad' (cached): $xxxxxxxxxxxxxxxxxxxxxxxx7~maenad at 192.81.135.242
Nov 21 13:21:50.000 [notice] new bridge descriptor 'Unnamed' (cached): $xxxxxxxxxxxxxxxxxxxxxxxx~Unnamed at 104.168.175.42
Nov 21 13:21:50.000 [notice] Bootstrapped 80%: Connecting to the Tor network
Nov 21 13:21:50.000 [notice] Ignoring directory request, since no bridge nodes are available yet.
Nov 21 13:21:51.000 [notice] Bootstrapped 85%: Finishing handshake with first hop
Nov 21 13:21:51.000 [notice] Bridge 'maenad' has both an IPv4 and an IPv6 address.  Will prefer using its IPv4 address (xxx.xxx.xxx.xxx) based on the configured Bridge address.
Nov 21 13:21:52.000 [notice] Bridge 'maenad' has both an IPv4 and an IPv6 address.  Will prefer using its IPv4 address (xxx.xxx.xxx.xxx) based on the configured Bridge address.
Nov 21 13:21:52.000 [notice] new bridge descriptor 'maenad' (fresh): $xxxxxxxxxxxxxxxxxxxxxxxx~maenad at 192.81.135.242
Nov 21 13:21:52.000 [notice] Bootstrapped 90%: Establishing a Tor circuit
Nov 21 13:21:53.000 [notice] new bridge descriptor 'Unnamed' (fresh): $xxxxxxxxxxxxxxxxxxxxxxxx~Unnamed at 104.168.175.42
Nov 21 13:21:54.000 [notice] Tor has successfully opened a circuit. Looks like client functionality is working.
Nov 21 13:21:54.000 [notice] Bootstrapped 100%: Done