Prevent VIP's from other nodes to start on 11gr2 RAC ??

I have one node which is part of 3 node 11gr2 RAC.
Other 2 nodes(rac1, rac2) a power down, and on this node(rac3), crs is down.
Problem is, that, if I switch crs up, he will up all VIP addresses , from
rac3-vip, but, also rac2-vip, rac1-vip..but, this (rac1-vip, rac2-vip) is
already VIP address's in production on second RAC.
1)Can I somehow disable this 2 VIP's BEFORE I start crs on rac3 to prevent
this other VIP address to start on rac3???
2) If no, can I start crs, and quick stop down this VIP's,
crs_stop ora.rac2.vip
crs_stop ora.rac3.vip
3) and maybe somehow prevent from future start before I really migrate
everything on new RAC??
Tnx

sauron666 wrote:
I already do that, because this is preprod, we prepare to switch prod 10g rac to this 11gr2 rac.
10g rac has 2 nodes. (prod)
11gr2 rac has 3 nodes. (2 nodes have same VIP as prod).Huh? That's not what I would call a good idea. Using the same IP addresses? What for? Why not re-use the hostnames instead?
Today the VIP hostnames resolve to the 10g RAC's VIPs. Tomorrow when the switchover to 11g happens, the DNS is updated and these VIP hostnames resolve to the 11g RAC's VIPs.
So, I want on this third node from 11gr2 RAC to stop those VIP's, which is the same as prod VIP's..so I can have third node up, and first 2 node from 11gr2 rac down (which have same VIP's as 10g rac)Just the idea of purposefully creating duplicate IPs on a network.. Crazy...
You can try and hide those 11g RAC duplicate IPs from the network. Routing table is perhaps an option. Using iptables is another Or as you want, preventing the VIPs from starting in the first place.
But you should take this as a lesson in how NOT to configure networking. Duplicating IPs is simply a no-no. There is no reason I've ever seen, nor can think of, why IPs should be duplicated like this. Hostnames resolution exists for addressing such requirements.

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