Question about isolating vmotion traffic.

Hi,

I have a question, we are trying to isolate vmotion traffic and i'm having trouble.

I have two vswitches.

Vswitch 0

management only option selected, 10.85.85.4, subnet 255.255.254.0, gateway 10.85.85.1, trunk port, VLAN 85

nic0 and nic 1

vswitch 1

vmotion only selected, 10.85.80.2, subnet 255.255.255.0, gateway 10.85.80.1, access port, VLAN 80

When I modify the default GW on vswitch 1 it changes the default GW on vswitch 0 also and I lose
connectivity.  I understand you can't have two vmkernel GW's, if not how do i fix this?

Thanks,

Greg