airbase-ng soft-ap does not work because of high amount of tcp retransmission

[altex]

Title: airbase-ng soft-ap does not work because of high amount of tcp retransmission
--------

UPDATE 27-Jan-2015:
that's a known issue:
http://forum.aircrack-ng.org/index.php/topic,387.0.html
http://trac.aircrack-ng.org/ticket/1252

Hello
I'm using Kali Linux 64 bit 1.0.9a (latest stable) on VmWare Player 7.0.0 on Windows 7 Pro on a i7-3930 desktop PC with 16Gb of ram.
Also i use USB Wifi adapter TP-Link TL-WN722N on Atheros AR9271 chip.

So after i've started soft-ap with airbase-ng and connect my phone (htc one m7) - my internet connection on the phone is too slow for anything. Cant load google.com or something else in a browser.
But if i use hostapd application on wlan interface all work fine.

I opened wireshark and there are a lot of TCP Retransmission messages in there.

Can somebody help me to fix that issue?
Thanks for help in advance.

DEBUG INFO
-----------------
i use these scripts to start soft-ap
1) to start soft-ap

#!/bin/bash

set -x

IF_WLAN=wlan2
IF_MON=mon0
IF_ETH=eth0
IF_AT=at0

killall dhclient NetworkManager wpa_supplicant
sleep 1
ifconfig $IF_MON
if [ "$?" -ne "0" ]
then
    airmon-ng start $IF_WLAN
fi

airbase-ng -c 6 --essid Printer $IF_MON

2) to start dhcp+iptables

#!/bin/bash

set -x

IF_WLAN=wlan2
IF_MON=mon0
IF_ETH=eth0
IF_AT=at0

ifconfig $IF_AT up 10.0.0.1 netmask 255.255.255.0
sleep 1

killall dhcpd
sleep 1

if [ "$(ps -e | grep dhcpd)" == "" ]
then
    dhcpd -cf ./dhcp.conf $IF_AT &
    sleep 1
fi

iptables --flush
iptables --table nat --flush
iptables --delete-chain
iptables --table nat --delete-chain
iptables --table nat --append POSTROUTING -o $IF_ETH -j MASQUERADE
iptables --append FORWARD -i $IF_AT -j ACCEPT
iptables --append FORWARD -o $IF_AT -j ACCEPT
iptables --append FORWARD -i $IF_ETH -j ACCEPT
iptables --append FORWARD -o $IF_ETH -j ACCEPT

sysctl -w net.ipv4.ip_forward=1

3) dhcp.conf

ddns-update-style none;
ignore client-updates;
authoritative;
option local-wpad code 252 = text;
subnet 10.0.0.0 netmask 255.255.255.0 {
    option routers 10.0.0.1;
    option subnet-mask 255.255.255.0;
    option broadcast-address 10.0.0.255;
    option domain-name-servers 8.8.8.8, 8.8.4.4;
    option time-offset 0;
    range 10.0.0.3 10.0.0.13;
    default-lease-time 1209600;
    max-lease-time 1814400;
}

Screenshots
------------------
1. a lot of TCP Retransmission packets - http://c2n.me/3bdPPMj.png
2. running first script - http://c2n.me/3bdQ2Jr.png
3. running second script - http://c2n.me/3bdQqqI.png
4. a lot of TX dropped packets on iface AT0 - http://c2n.me/3bdQwLZ.png
5. a lot of TCP Retransmission packets on iface ETH0 - http://c2n.me/3bdTxP3.png
6. no dropped packets on iface AT0 after i've raised up txqueuelen on that interface - http://c2n.me/3bdVTSx.png
but it didn't help - still tcp retransmission
7. detected usb wifi adapter after it has been connected - http://c2n.me/3bdWYnN.png
8. a lot of TCP Retransmission packates on iface MON0 - http://c2n.me/3bdXPXg.png and http://c2n.me/3bdY40f.png

[mmusket33]

The author of Pwnstar9.0 in his script suggests this site. Here is the updated link. See if any of the coding helps you?


http://simple-and-hot.blogspot.com/2...-yourself.html

MTeams

[altex]

The author of Pwnstar9.0 in his script suggests this site. Here is the updated link. See if any of the coding helps you?


http://simple-and-hot.blogspot.com/2...-yourself.html

MTeams

Thank you for the reply, but the solution in the http://simple-and-hot.blogspot.com/2...-yourself.html is not related to my issue in any way. I've wrote these scripts my-self only to help people to reproduce this issue, but the issue is not related to any scripts.

[altex]

that's a known issue: http://forum.aircrack-ng.org/index.php/topic,387.0.html
not sure if it's a good or bad news