Hi All,
I'm facing a weird problem. I've an OpenVPN server running in TAP (L2)
config with a separate DHCP server. This is working OK since quite a while,
but we just used windows based clients. Now, we wanted to connect a linux
client (did test with 2.4.x and 2.5.x clients), but we've noticed, that the
client is not getting any IP from the DHCP server.
tcpdump shows, that the DHCP DISCOVER arrives ok to the DHCP server, the
reply is sent back, and here comes the interesting thing:
- when the windows client connects, I see the DHCP REPLY on the tap0
interface of the server (and the client connects OK)
- wheen the linux client wants to connect, I see the DHCP REPLY only
on the interface facing the DHCP server, but not on the tap0 - it disappears
(I've tried to set the clients mac address nearly the same as the windows
machine, just for a test)
Please give some advise, what can cause such strange behaviour?
Server is 2.4.7-1 running on Debian 10.3, client is also a Deb10 running
2.4.7.
Thanks,
Tom
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