handling tap interfaces with /etc/init.d/network

[osi2897@i2pmail.org]

Please document how to use the tunctl command to generate a tap interface with the new /etc/init.d/network script.

The old net.*-scripts worked with:
tuntap_vbox0="tap"
tunctl_vbox0="-u misa"
config_vbox0=( "null" )
in /etc/conf.d/net.

What is the solution with the new single network script?

[roy]

# Instruct network about virtual interfaces
interfaces="vbox0"

# Using tunctl
ifup_vbox0="tunctl -t \$int"
ifdown_vbox0="tunctl -d \$int"

# Or if using OpenVPN
ifup_vbox0="openvpn --mktun --dev-type tap --dev \$int"
ifdown_vbox0="openvpn --rmtun --dev-type tap --dev \$int"

The question though is why document the creation of a tun/tap interface?
OpenVPN can create the interface itself and has it's own init script.

[osi2897]

A bridged tun/tap interface is needed for VirtualBox?.

I have this section in /etc/conf.d/network:

ifconfig_eth0="0.0.0.0"

interfaces="vbox0"
ifconfig_vbox0="0.0.0.0"
ifup_vbox0="tunctl -t \$int"
ifdown_vbox0="tunctl -d \$int"

defaultroute="192.168.178.1"

interfaces="br0"
ifconfig_br0="192.168.178.20 netmask 255.255.255.0"
ifup_br0="brctl addbr \$int; brctl setfd \$int 0; brctl stp \$int off; brctl ad$
ifdown_br0="ifconfig \$int down; brctl delbr \$int"

/etc/init.d/network -v start gives:

* Starting network
*   eth0...
*     0.0.0.0...                                                            [ok]
*   br0...
*     brctl addbr $int...                                                   [ok]
*     brctl setfd $int 0...                                                 [ok]
*     brctl stp $int off...                                                 [ok]
*     brctl addif $int eth0...                                              [ok]
*     brctl addif $int vbox0...
interface vbox0 does not exist!                                             [!!]
*     192.168.178.20 netmask 255.255.255.0...                               [ok]
* Setting default route 192.168.178.1...                                    [ok]

[roy]

You should only have one interfaces line

interfaces="vbox0 br0"

I've just committed a fix for --verbose showing $int instead of the interface name.

[osi2897]

Great, it was the interfaces line (perhaps some more documentation/examples would help). And thanks for the fix for --verbose. Now vbox0 and br0 start without errors.

Only /etc/init.d/network -v gives "[!!]" (but both br0 and vbox0 are stopped).

* Stopping network
*   br0...
*   ifconfig br0 down...                                                    [ok]
*   brctl delbr br0...                                                      [!!]
*   vbox0...
*   tunctl -d vbox0...
Set 'vbox0' nonpersistent                                                   [!!]
*   eth0...                                                                 [ok]

[roy]

Interesting. That implies both commands returned non zero.
Could you attach (ie don't inlcude in a comment) the output of the same command, but with --debug please?

[roy]

Those !! should be fixed in r1556 now.