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Two different machines/vps/os listening on same ip?
I have a crazy problem with a vps provider and currently I'm at a loss but I think I've found one abnormality that may explain what is going on:
For some reason it looks as if the ip address is routed to two different machines/vps/os: one mine and one other (not mine).
Now I ask myself, how could this happen and have you ever seen such a situation?
My current hints are dups in ping (never had those before) plus ssh freezes plus ssh situations where I can connect in one second, and next second I get a "connection reset by peer".
It really looks like if machine a is answering, everything is fine, but if machine b is answering, hell breaks loos (as expected).
Comments
Speaking with the hosts support may find the issue and solve it.
Happens sometimes.
Hm, yes, I'm speaking with them already but so far they don't seem to have a clue what is going on.
All their tools via their management console also act crazy (e.g. reboot, boot into rescue mode, etc.) in working sometimes, other times not, so everything seems to happen randomly.
And as I don't see e.g. the route switching in mtr, I assume the second listening "machine" is on the same host node. The only crazy think observable on the network from the outside besides dups is crazy latency spikes.
If you dont have important data on that have them destroy and rebuild it with new ip.
Easy way to get over the problem generally speaking
Good luck
Probably I'll go that way, right now I see it as a test case for their support quality.
(With that provider so far I only needed hardware support, e.g. swapping hdds, etc., which is always solved fast and good)
I'll let it boil a bit more (so far got replies by four different people at the provider on one ticket post by me without any solution).
Do an ARPING, it'll give you the MAC of the server's thats using the other IP.
Happens sometimes, even to the professionals - so don't be too harsh on your provider and give them a lead to find and fix the issue.