diff --git a/rootfs/usr/local/etc/docker/init.d/01-tor-bridge.sh b/rootfs/usr/local/etc/docker/init.d/01-tor-bridge.sh
index d8b5ea4..f086bb5 100755
--- a/rootfs/usr/local/etc/docker/init.d/01-tor-bridge.sh
+++ b/rootfs/usr/local/etc/docker/init.d/01-tor-bridge.sh
@@ -195,6 +195,7 @@ TOR_RELAY_ENABLED="${TOR_RELAY_ENABLED:-yes}"
 TOR_BRIDGE_ENABLED="${TOR_BRIDGE_ENABLED:-yes}"
 TOR_HIDDEN_ENABLED="${TOR_HIDDEN_ENABLED:-yes}"
 RANDOM_NICK="$(head -n50 '/dev/random' | tr -dc 'a-zA-Z' | tr -d '[:space:]\042\047\134' | fold -w "18" | sed 's| ||g' | head -n 1)"
+HAS_IPV6="$([ -n "$(type -P ifconfig 2>/dev/null)" ] && ifconfig "eth0" | grep 'inet6' | grep 'global')"
 # - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 # Custom commands to run before copying to /config
 __run_precopy() {
@@ -297,7 +298,6 @@ ServerTransportPlugin obfs4 exec /usr/bin/lyrebird
 ServerTransportListenAddr obfs4 0.0.0.0:${TOR_BRIDGE_PT_PORT:-57003}
 
 ORPort ${TOR_BRIDGE_OR_PORT:-57004}
-DirPort ${TOR_BRIDGE_DIR_PORT:-57005}
 Nickname ${TOR_BRIDGE_NICK_NAME:-$RANDOM_NICK}
 ContactInfo ${TOR_BRIDGE_ADMIN:-tor-admin@$HOSTNAME}
 AccountingMax ${TOR_BRIDGE_ACCOUNT_MAX:-250 GBytes}
@@ -320,6 +320,10 @@ EOF
 	if [ "$TOR_DEBUG" = "yes" ]; then
 		sed -i 's|#Log debug|Log debug|g' "$CONF_DIR/bridge.conf"
 	fi
+	if [ -z "$HAS_IPV6" ]; then
+		sed -i 's|AddressDisableIPv6 0|AddressDisableIPv6 1|g' "$CONF_DIR/bridge.conf"
+	fi
+
 	# allow custom functions
 	if builtin type -t __update_conf_files_local | grep -q 'function'; then __update_conf_files_local; fi
 	# exit function
diff --git a/rootfs/usr/local/etc/docker/init.d/02-tor-relay.sh b/rootfs/usr/local/etc/docker/init.d/02-tor-relay.sh
index 5393ab8..c190660 100755
--- a/rootfs/usr/local/etc/docker/init.d/02-tor-relay.sh
+++ b/rootfs/usr/local/etc/docker/init.d/02-tor-relay.sh
@@ -195,6 +195,7 @@ TOR_RELAY_ENABLED="${TOR_RELAY_ENABLED:-yes}"
 TOR_BRIDGE_ENABLED="${TOR_BRIDGE_ENABLED:-yes}"
 TOR_HIDDEN_ENABLED="${TOR_HIDDEN_ENABLED:-yes}"
 RANDOM_NICK="$(head -n50 '/dev/random' | tr -dc 'a-zA-Z' | tr -d '[:space:]\042\047\134' | fold -w "18" | sed 's| ||g' | head -n 1)"
+HAS_IPV6="$([ -n "$(type -P ifconfig 2>/dev/null)" ] && ifconfig "eth0" | grep 'inet6' | grep 'global')"
 # - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 # Custom commands to run before copying to /config
 __run_precopy() {
@@ -322,6 +323,9 @@ EOF
 	if [ "$TOR_DEBUG" = "yes" ]; then
 		sed -i 's|#Log debug|Log debug|g' "$CONF_DIR/relay.conf"
 	fi
+	if [ -z "$HAS_IPV6" ]; then
+		sed -i 's|AddressDisableIPv6 0|AddressDisableIPv6 1|g' "$CONF_DIR/relay.conf"
+	fi
 
 	# allow custom functions
 	if builtin type -t __update_conf_files_local | grep -q 'function'; then __update_conf_files_local; fi
diff --git a/rootfs/usr/local/etc/docker/init.d/03-tor-server.sh b/rootfs/usr/local/etc/docker/init.d/03-tor-server.sh
index 028aa5d..4df8749 100755
--- a/rootfs/usr/local/etc/docker/init.d/03-tor-server.sh
+++ b/rootfs/usr/local/etc/docker/init.d/03-tor-server.sh
@@ -196,6 +196,7 @@ TOR_RELAY_ENABLED="${TOR_RELAY_ENABLED:-yes}"
 TOR_BRIDGE_ENABLED="${TOR_BRIDGE_ENABLED:-yes}"
 TOR_HIDDEN_ENABLED="${TOR_HIDDEN_ENABLED:-yes}"
 RANDOM_NICK="$(head -n50 '/dev/random' | tr -dc 'a-zA-Z' | tr -d '[:space:]\042\047\134' | fold -w "18" | sed 's| ||g' | head -n 1)"
+HAS_IPV6="$([ -n "$(type -P ifconfig 2>/dev/null)" ] && ifconfig "eth0" | grep 'inet6' | grep 'global')"
 # - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 # Custom commands to run before copying to /config
 __run_precopy() {
@@ -362,7 +363,9 @@ EOF
 	if [ "$TOR_DEBUG" = "yes" ]; then
 		sed -i 's|#Log debug|Log debug|g' "$CONF_DIR/server.conf"
 	fi
-
+	if [ -z "$HAS_IPV6" ]; then
+		sed -i 's|AddressDisableIPv6 0|AddressDisableIPv6 1|g' "$CONF_DIR/server.conf"
+	fi
 	# allow custom functions
 	if builtin type -t __update_conf_files_local | grep -q 'function'; then __update_conf_files_local; fi
 	# exit function