[VLAN] VLAN issue - other IP's discovered across VLANS

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Hello
I have a server setup with the following network config:

Default	eth0		- 192.168.100.1 255.255.255.0 GW:192.168.100.254
VLAN2	eth0.2	- 0.0.0.2 255.255.255.255
VLAN3	eth0.3	- 0.0.0.3 255.255.255.255
VLAN4	eth0.4	- 0.0.0.4 255.255.255.255

The reason for this is that I run VMWare server and the other VLANS are used by the VMWare server.. Without setting any IP, I got errors..

I have a VLAN truck from my HP-managed switch. All VLANS tagged except Default VLAN (I have tried this with tagging on Default VLAN also).

If I add my linux desktop to VLAN4 and do a netdiscover, it will find the 192.168.100.1 (I can not access it, but since it is detectable from outside, it is a risk).

I do not have the VMWare running when doing this, so that does not interfere.

Why do netdiscover see the interface? 
I also tried moving the 192.168.100.1 interface to another physical interface, but netdiscover still reports it.

My system:
	Ubuntu 6.10 edgy - server install
	Netcard: 00:01.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8169 Gigabit Ethernet (rev 10)
	Linux 2.6.17-10-generic #2 SMP Fri Oct 13 18:45:35 UTC 2006 i686 GNU/Linux
	VLAN ubuntupackage v1.9-1
	netdiscover v0.3-beta6

/MartOn
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