Broadcasts on LAN (not VPN) MAC address?

Majkl

Hi,

I noticed that OpenVPN client sends many (5-10 times in 1 sec) broadcasts, 50 bytes each, with src MAC address of real ethernet card, not with TAP adapter MAC.

It does not make sense to me and I do not like such number of broadcasts.

What is it good for, please?

Thanks, Michal

Windows XP, SP 3.
##############################################
# My config.
##############################################
client
dev tun
dev-node VPN
proto udp
remote xxxx 1194
resolv-retry infinite
nobind
persist-key
persist-tun
ca A.pem
cert B.pem
key C.key
tls-auth ta.key 1
comp-lzo
verb 3

Majkl

Eh, I forgot... And the broadcasts source IP is VPN IP of my PC (assigned to it by VPN server).

Majkl

debbie10t wroteBroadcast traffic will not traverse your VPN as it is in tunnel mode, so all the broadcasts will remain only on your local LAN, which is fine if you are on a trusted LAN, not so good if you are in a coffee shop for example.

In your case, the traffic is most likely ARP or NetBIOS.

It is not safety concern. I do not get it.
- Why it uses VPN IP and ethernet (not TAP driver interface) MAC? I would expect VPN IP and VPN MAC, at least.
- Why about 10 packets for second? It generates quite a traffic on LAN, without sense.

Majkl