fix: ip route on darwin when enable tun2socks

scripts/create_tun_dev_darwin.sh

@@ -10,7 +10,7 @@ local_gateway_v6=$8
 
 # create tun device
 ifconfig "$tun_device" "$tun_ip" "$tun_gw" up
-ifconfig "$tun_device" inet6 "$tun_ip_v6" "$tun_gw_v6" up
+ifconfig "$tun_device" inet6 "$tun_ip_v6"/64  up
 
 # add ipv4 ip route
 route add -net 1.0.0.0/8 "$tun_gw"
@@ -23,10 +23,8 @@ route add -net 64.0.0.0/2 "$tun_gw"
 route add -net 128.0.0.0/1 "$tun_gw"
 route add -net 198.18.0.0/15 "$tun_gw"
 
-route add "$local_gateway" "$tun_gw"
 
 if [ -n "$server_ip_v6" ]; then  # check if server_ip_v6 is not empty
   # add ipv6 ip route
   route add -inet6 -net ::/0 -gateway "$tun_gw_v6"
-  route add -inet6 -net "$local_gateway_v6" -gateway "$tun_gw_v6"
 fi