You have to create tap0 and tap1 with ip-address 0.0.0.0 and bridge the
two devices together.
Note: do you really need a such big 255.240.0.0 network?
First of all, modifiy your vtun startup script on your Gentoo-Box:
Before start VTUN create a network-bridge.
--- SNIP init.d/vtund ---
/sbin/brctl addbr vpnbr
/sbin/ip link set dev vpnbr up
/sbin/ip addr add 172.16.0.1/12 brd + dev vpnbr
/sbin/vtund -s -f /etc/vtund.conf
--- SNAP init.d/vtund ---
--- SNIP vtund.conf ---
up
{
program "/sbin/ip link set dev %% up";
program "/sbin/ip addr add 0.0.0.0 dev %%";
program "/sbin/brctl addif vpnbr %%";
};
down
{
program "/sbin/brctl delif vpnbr %%";
};
--- SNAP vtund.conf ---
This code was written out of my mind. Perhaps you have to modify the code. But
this is the theoretical way to connect all tun-devices without routing.
On your server-config-file please change multi from yes to killold to prevent
some strange problems.
Liebe Grüße aus Freilassing,
Michael Rack
RSM Freilassing
--
RSM Freilassing Tel.: +49 8654 607110
Nocksteinstr. 13 Fax.: +49 8654 670438
D-83395 Freilassing www.rsm-freilassing.de
Am 10.12.2009 14:45, schrieb dorian:
> Hello all,
> I am quite new user of the vtun software and I found the following problem.
> I have 2 Linksys boxes (OpenWrt, WhiteRussian 0.9) configured as vtun
> clients and one Linux box (Gentoo) working as vtun server.
>
> What I need is to connect both Linksys boxes and PC in _ONE_ network.
>
> The simplest what I hit on was to create tunnel from Linksys1 to server
> and next from Linksys2 to server using the same TAP device.
>
> But I have found the problem with second tunnel:
> "Can't allocate tap device tap0. Device or resource busy(16)".
>
>
> Of course if I create tunnels using tap0 and tap1 (for each Linksys
> devices) everything is ok.
>
> But this in not what I would like to have since the second TAP needs
> another IP (and extra routing rules).
>
> I would like to have:
> - Linksys1 working with address 172.16.0.2
> - Linksys2 working with address 172.16.0.3
> - and the server having address 192.16.0.1
>
> Is it possible?
>
> Any suggestions will be appreciated.
>
> ---------------------
> The part of my server config is:
> MYSESSION {
>
> type ether; # Ethernet tunnel (required)
> device tap0;
> proto tcp; # TCP since Linksys boxes are behind firewall
> compress no;
> encrypt yes;
> stat yes;
> keepalive yes;
> multi yes;
>
> up {
> ifconfig "%% 172.16.0.1 netmask 255.240.0.0";
> };
> }
>
> Client's configs are the same.
> First Linksys local IP is 172.16.0.2 and the second one 172.16.0.3
> ----------------------
>
> Regards,
> Dorian
>
>
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