400 BAD request, HttpException (on mitm.it)

Steps to reproduce the problem:

sudo sysctl -w net.ipv4.ip_forward=1 sudo iptables -t nat -A PREROUTING -i enp3s0 -p tcp --dport 443 -j REDIRECT --to-port 8080 sudo iptables -t nat -A PREROUTING -i enp3s0 -p tcp --dport 80 -j REDIRECT --to-port 8080 sudo ./mitmproxy --mode transparent --showhost Getting Error while opening mitm.it from my Android Error is–

400 Bad Request HttpException('\n Mitmproxy received an absolute-form request even though…

My ifconfig is

enp0s29f7u8 Link encap:Ethernet  HWaddr XXX  
          inet addr:192.168.42.28  Bcast:192.168.42.255  Mask:255.255.255.0
          inet6 addr: 2405:ccc:7306:4d8c/64 Scope:Global
          inet6 addr: XXXea/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:8112 errors:1 dropped:0 overruns:0 frame:0
          TX packets:7987 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:6120219 (6.1 MB)  TX bytes:1588233 (1.5 MB)

enp3s0    Link encap:Ethernet  HWaddr XXX  
          inet addr:10.42.1.1  Bcast:10.42.1.255  Mask:255.255.255.0
          inet6 addr: feXXXX5/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:60978 errors:0 dropped:0 overruns:0 frame:0
          TX packets:40965 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:66103467 (66.1 MB)  TX bytes:6917725 (6.9 MB)

In my android wifi, i added proxy as 10.42.1.1 port 8080 And i cant find eventlog 😦 How to make it work?

Any other comments? What have you tried so far?

Also i tried with mitmweb and it worked, but after click on request i got blank page. And it seems mitmweb cant capture SSL(HSTS), is that true??? Does mitmproxy successfully capture HSTS request?

System information

No LSB modules are available.
Distributor ID:	Ubuntu
Description:	Ubuntu 16.04.3 LTS
Release:	16.04
Codename:	xenial

Mitmproxy: 3.0.4 binary
Python:    3.6.3
OpenSSL:   OpenSSL 1.1.0h  27 Mar 2018
Platform:  Linux-4.13.0-41-generic-x86_64-with-debian-stretch-sid

[TonyStark]

nope 😦

[TonyStark]

@mhils This is still not solved Now i m on Manjaro OS 64bit Still when i run sudo ./mitmproxy --mode transparent --showhost getting 400 BAD request but if i run only sudo ./mitmproxy i can successfully load mitm.it page