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[Openvpn-users] Multiple IPs -- switching to a different netblock


  • Subject: [Openvpn-users] Multiple IPs -- switching to a different netblock
  • From: Adi Kriegisch <adi@xxxxxxxxxxxxxxx>
  • Date: Thu, 4 Aug 2005 12:26:34 +0200

I am switching my VPN Server to a different netblock; fortunately I have some 
overlapping where I may use both netblocks.
So I set up my server with both public IPs on one interface with different 
routing. When using ssh to connect the connection works just fine, but with 
openvpn it simply doesn't:
| Thu Aug 04 12:09:12 2005 TCP/UDP: Incoming packet rejected from 
| my.new.i.p:1194[2], expected peer address: my.old.i.p:1194 (allow 
| this incoming source address/port by removing --remote or adding --float)  

the new ip is the primary one on the machine and the old one is on eth1:1 with 
a seperate routing table.

when using "float" on the client side everything works just fine; but that is 
not what I want. The migration should work with no change on the client side.

At the moment I am at a testing stage; but when going production all users 
should be able to connect until all changes are propagated through dns.

Best regards,
	Adi Kriegisch

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