2 Dreamcasts can't connect over same wifi?

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pcwzrd13
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Re: 2 Dreamcasts can't connect over same wifi?

Post#11 » Wed Jun 16, 2021 4:10 pm

Scrivani wrote:And if you going to play games that need port forwarding, you can open all need ports to those different IP's.

Just DMZ that need to be set to a unique IP.


I've don't believe it's possible to forward the same port to multiple IPs. In fact, most routers won't even let you do that as you can see here:

PF.png
PF.png (9.72 KiB) Viewed 3237 times


Also, port forwarding takes priority over DMZ so if you have DMZ set for one IP and port forwarding to another, packets will go to the port forwarded IP.
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Scrivani
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Re: 2 Dreamcasts can't connect over same wifi?

Post#12 » Wed Jun 16, 2021 4:20 pm

Oh right, PC

Maybe can be done with outside and individual firewall solutions, like mikrotik.
Happy if may help:
- BBA Mode for DreamPi: https://bit.ly/3JEIuhs
- VPN Port Fowarding: https://bit.ly/3Bgw4bu
- DC Now Data Analysis: https://bit.ly/42coxXw
- DC KARA NOT DEAD AT ALL- VCD Method: https://bit.ly/3P6VePw
- Know part of BR Community: https://bit.ly/3iLXS12

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Re: 2 Dreamcasts can't connect over same wifi?

Post#13 » Wed Jun 16, 2021 11:12 pm

Unfortunately, there is no way to forward the same port to two separate IP addresses behind the same NAT. It doesn't matter what fancy piece of equipment you put in front, if you only have one IP address coming in, you can't divide the same port on that same IP address.

If you had multiple IPs coming in from your ISP, it'd be possible (of course), assuming each Dreamcast only used one of those external IP addresses. But I'm pretty sure there there are no residential ISPs that give you multiple IPv4 addresses and highly doubt any even offer that option.

Now, you could do something like this with a VPN or something, but that'd require paying for a VPN service and would probably give you unbearably bad lag.

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Scrivani
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Re: 2 Dreamcasts can't connect over same wifi?

Post#14 » Fri Jun 18, 2021 7:28 pm

BlueCrap, can you see something in this xbox workaround that can be replicated to DC context?

Ty.

https://ccm.net/forum/affich-32140-i-cant-play-online-with-2-xbox-360-why
Happy if may help:
- BBA Mode for DreamPi: https://bit.ly/3JEIuhs
- VPN Port Fowarding: https://bit.ly/3Bgw4bu
- DC Now Data Analysis: https://bit.ly/42coxXw
- DC KARA NOT DEAD AT ALL- VCD Method: https://bit.ly/3P6VePw
- Know part of BR Community: https://bit.ly/3iLXS12

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