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A comment on I spent a week without IPv4 to understand IPv6 transition mechanisms. Parent comment

Re:I spent a week without IPv4 to understand IPv6 transition... by cassianoleal on Monday March 06, 2023 @06:07PM (#35049131)
Doesn't it let you put it in bridge mode (i.e. modem only)?
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Re:I spent a week without IPv4 to understand IPv6 transition... by groestl on Monday March 06, 2023 @09:00PM (#35050567)
ISP uses DS-Lite: ipv6 is native, ipv4 is 4-in-6/CG-NAT. When I switch to bridge mode, it loses ipv6 connectivity, so sadly, that's not an option if ipv6 is the goal.
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Re:I spent a week without IPv4 to understand IPv6 transition... by cassianoleal on Tuesday March 07, 2023 @06:34AM (#35054192)
I see. Or rather, I don't quite. :D

I'm not very familiar with DS-Lite. My ISP also uses CG-NAT but I get my connection details over DHCP - both native v6 with /56 PD and the v4 CG-NAT 100.x.x.x IP. That means I connect my OpenWRT router directly to the ISP's plug in the flat.

You said v6 is native for you, but if you put the modem in bridge mode you lose v6 connectivity. Why is that so? Shouldn't you lose v4 instead, which relies on tunneling?

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