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doc: Add notes about running hostapd in a network namespace

This commit is contained in:
Marcel Holtmann 2018-10-16 17:46:33 +02:00
parent 2000a24ff6
commit 36cedb1f46
1 changed files with 29 additions and 3 deletions
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doc/8021x-wired-testing.txt
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@ -9,7 +9,7 @@ traffic on these interfaces and use protocols other than IP.
To create a virtual ethernet pipe with one end called veth0 and the other To create a virtual ethernet pipe with one end called veth0 and the other
called veth1, use the following command: called veth1, use the following command:
ip link add veth0 type veth peer name veth1 sudo ip link add veth0 type veth peer name veth1
The pair of interfaces are identical and act as a dumb pipe, there is no The pair of interfaces are identical and act as a dumb pipe, there is no
master or slave end. Deleting either end will cause both interfaces to be master or slave end. Deleting either end will cause both interfaces to be
@ -18,8 +18,8 @@ when one side of the link is in the 'DOWN' state. if the other link is in
the 'DOWN' state it will indicate 'NO-CARRIER' until the other end is the 'DOWN' state it will indicate 'NO-CARRIER' until the other end is
brought up: brought up:
ip link set veth0 up sudo ip link set veth0 up
ip link set veth1 up sudo ip link set veth1 up
Testing 802.1x on Virtual Ethernet Device Testing 802.1x on Virtual Ethernet Device
@ -72,3 +72,29 @@ To run wpa_supplicant (add "-dd -K" for debugging):
sudo ./wpa_supplicant -iveth1 -c./wpa_supplicant.conf -Dwired sudo ./wpa_supplicant -iveth1 -c./wpa_supplicant.conf -Dwired
Running Authenticator in a network namespace
============================================
In some cases it might be useful to run hostapd in a network namespace to
provide real separation between the two network interfaces. First create
the "hostap" named network namespace:
sudo ip netns add hostap
Now move the network interface of hostapd into the "hostap" named network
namespace:
sudo ip link set veth0 netns hostap
Inside the "hostap" named network namespace the loopback interface needs
to be brought up and also the network interface:
sudo ip netns exec hostap ip link set lo up
sudo ip netns exec hostap ip link set veth0 up
Then execute hostapd inside the network namespace:
sudo ip netns exec hostap ./hostapd wired_hostapd.conf
After that run wpa_supplicant as described above.