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Not directly. You'd need to set up a tunnel to route the traffic from your home to your VPS.
Most people usually want to do this the other way around
Yes it's possible, but why don't you get a raspi at home?
As it's a single IP address, BGP is out of the question. You'll want to look into setting up a GRE tunnel, however this would mean all traffic routed to your remote VPS via the second IPv4 would tunnel through your home internet connection. I don't necessarily see why you would want to do this, but it's possible. maybe elaborate on what your intentions are, then we can assist further?
I don’t know GRE stuff
What I think is to buy a IPv6 VPS and use my own IPv4 for saving cost. Is this possible?
You would still need the IPv4 for connecting right? Also which dumbfuck charges for IPv4 what the heck is your provider?
Hetzner does charge for IPv4, afaik
This article covers outbound IPv4 connections from IPv6-only server:
Enable IPv4 Access in EUserv IPv6-only VS2-free
The IPv6-only server would be behind NAT.
Inbound IPv4 connections can be realized through port forwarding.
It's possible to bind the IPv4 address to the tunneled interface as if it's on the remote server directly, so that all ports and all protocols (including GRE and SIT) may be used.
However, this is more complicated to setup.
huh why
It sounds like you don't have the technical prerequisites anyway, but how much money do you imagine that you would save?
USD 3.13 pm if he were to buy IP from Hetzner.
But the OP speaks of a VPS: doesn't Hetzner give an IPv4 with a VPS?
Not for free
Nothing is for free, but can one order a VPS at Hetzner without an IPv4 and pay less?
besides the cost, I could switch among different providers with the same IP. Just as a domain name can switch among many different IPs. that's my original thought, I don't know if the tech behind is possible. thanks for all comments.
Hetzner provides free IPv6, but if you want IPv4, you have to pay extra for it.
So, it's not really that you pay less without IPv4, it's just that you don't pay extra.
@frakass What is the upload (not download) speed of your home connection? Even if you did tunnel this second IP to a VPS you would be limited to this upload speed. Which would probably be your bottleneck.
To answer your question, yes you could do this, but it would be more cost effective to get a RPI as @Kousaka said, or other computer to run as a server at home and route the second IP to it, then to tunnel to a VPS.
If you still wish to tunnel you may want to take a look at tinc, or openVPN to use as an alternative to a GRE tunnel. As these are encrypted tunnels and have other features that a GRE tunnel will not have.
the uploading speed is 30 mbps, the download speed is 200 mbps.
Then 30 mb/s would be the max speed of your tunnel .
Second question is does your home router have this capability to forward to an IP not on your local LAN? Other wise you will need an RPI or something to setup the tunnel on.
Don't forget you're introducing more steps into the connecting chain (so more chances on failure) and increased latency.
Especially with a asynchronous up/downspeed, I suspect OP is using DSL or cable as home connection. So you're looking at quite some latency added.
Personally, I wouldn't go through the hassle, unless I'd have prove that most of my connections would come from IPv6 and would go to the VPS directly.
I agree with what you said above and personally I would not do this ether. I would just set up a home server on the second IP and keep failover copies of my VPSes and some backups on it.
EDIT: But my ISP does not allow any web severs or mail servers to be run on residential services, so I could not do anything with the second IP.
Ipv4 is inclouded in price ipv6-only is cheap af
(I give up )
Tunneling is a workaround and is totally dependable on your home upstream.
You can't use Your public v4 IP unless its announced on their network via BGP.
To move it you have to have ownership of the IP and provide an LOA.
What kind of residental ISP gives out two IPv4 addresses? In some places you don't even get one.
Is this when we find out his second IP address is 127.0.0.1?
192.168.0.1 or 10.0.0.1 probably
Nah. Could be 255.255.255.0 though.
wouldn't blame them, IPv4 prices are through the roof.
I get five dynamic IPv4 addresses in Sweden. But Sweden has an unusually large amount of IPv4 addresses for its population RIPE NCC wrote in a report from last week. The downside is that's likely holding back IPv6 deployment. Though I'm pretty happy with Hurricane Electric, and at least my mobile phone has got native IPv6.
"A Special RIPE NCC Country Report: IPv6 in Sweden"
https://labs.ripe.net/author/suzanne_taylor_muzzin/a-special-ripe-ncc-country-report-ipv6-in-sweden/