Arch Linux

Torxed

Member

Registered: 2013-01-10

Posts: 202

OpenVPN Ethernet Bridge - Can't ping clients

I've setup static routes/ip's on my machine.

I have:
eth0 - 10.22.33.11/24
br0 - 10.0.0.1/24

#ip route
10.0.0.0/24 dev br0 proto kernel scope link src 10.0.0.1
10.22.33.0/24 dev eth0 proto kernel scope link src 10.22.33.11

And the clients connect as they should meaning the VPN connection gets established and prior to this they can all ping each other outside of the VPN.
As soon as the VPN is established they can't ping each oter via the VPN network topology and not outside either (the later is confed to behave this way, rerouting traffic).

I'm not interested in bridging connections so that they share a new internet connection but i do wan't to keep bridge functionality to join more local VPN networks later on.

The VPN config is in essense this:

dev tap0
client-to-client
up "up.sh eth0"  <-- Which has "ghost parameters" as in MTU and tap0

and the up scripts looks like:

brctl addbr $1
brctl setfd br0 0
brctl addif br0 tap0
ip link set tap0 up promisc on mtu $4
ip link set br0 up

And when i have two clients connected, doing (from the server):
ping 10.0.0.21

gives me:

From 10.0.0.1 icmp_seq)# Destination Host Unreachable

Any ideas to why that is?

Last edited by Torxed (2013-05-31 13:04:47)

Torxed

Member

Registered: 2013-01-10

Posts: 202

Re: OpenVPN Ethernet Bridge - Can't ping clients

Sorry, correction should me made.
The server and clients can ping each other in both directions except for one host which i was trying with..

So i'm assuming local issue on one of the clients (still strange because firewalls are off and they are all identical)

Edit: Yepp, something wrong with a XP machine on the network (all others are Win7 with disabled firewalls)

Last edited by Torxed (2013-05-31 13:32:32)