T60 as Pi Ethernet-WiFi-Bridge

I used a Lenovo Thinkpad T60 (Model #2008) to supersede the Pi3.

Setup

The setup is exactly the same as this: Raspberry as Pi Ethernet-WiFi-Bridge, with a few exceptions:

enableBridge.sh

The bridge itself is setup by hostapd. But it is only linked to the WiFi-Interface. So this script is launched after hostapd:

DEVWIFI="wlx00e04c0f4ac0"
DEVETH="ens2"
DEVBR="br0" # generated by hostapd

# 1: give the Bridge an IPA
/sbin/ifconfig $DEVBR | grep inet | grep 10.178 > /dev/null 2>&1
if [ "$?" -ne 0 ]; then
  ifconfig br0 10.178.111.242 netmask 255.255.255.0
  route add default gw 10.178.111.1
  logger "Added $DEVBR IPA."
fi

# 2: remove ens2's IPA
/sbin/ifconfig $DEVETH | grep inet | grep 10.178 > /dev/null 2>&1
if [ "$?" -eq 0 ]; then
    ip addr flush dev $DEVETH
    logger "Flushed $DEVETH IPA."
fi

# 3: Add Ethernet to bridge
/sbin/brctl show $DEVBR | /bin/grep $DEVETH > /dev/null 2>&1
if [ "$?" -ne 0 ]; then
 # do it
 echo "Adding ethernet to the bridge..." | logger
 /sbin/brctl addif $DEVBR $DEVETH
 /bin/sleep 1
fi

Power Consumption

tbd

Troubleshooting Tips

hostapd not working

service hostapd stop
hostapd -d /etc/hostapd/hostapd.conf

Read the output thoroughly. There is a clue!

In my case I needed to mark the WiFi-device (wlx00e04c0f4ac0) as unmanaged in /etc/NetworkManager/NetworkManager.conf:

[keyfile]
unmanaged-devices=interface-name:wlx00e04c0f4ac0;interface-name:wls3

RF-Kill?

If you get...

SIOCSIFFLAGS: Operation not possible due to RF-kill

...it might mean the RF-Kill-Switch of your Thinkpad is set on. But it can also mean that you just disabled WiFi in Network Manager.

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