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34
votes
5answers
48k views

Should I use tap or tun for openvpn?

What are the differences between using dev tap and dev tun for openvpn? I know the different modes cannot inter-operate. What is the technical differences, other then just layer 2 vs 3 operation. ...
4
votes
2answers
10k views

How can I setup OpenVPN with IPv4 and IPv6 using a tap device?

I've managed to setup OpenVPN for full IPv4 connectivity using tap0. Now I want to do the same for IPv6. Addresses and network setup (note that my real prefix is replaced by 2001:db8): ...
1
vote
2answers
681 views

Tap0 not receiving traffic

I have created a tap device tap0 address 10.2.1.4 and added it to a host bridge br1 with address 10.2.1.1 I have "nc 10.2.1.4 -l 1234" running on the host and from another machine I do a "nc ...