IPv6 cloudflared (zero trust tunnels)

Hi, I'm trying to run cloudflared on a IPv6 only machine, but am having some troubles.

I used the --edge-ip-version 6 param.

This is within docker.

cloudflared-1  | 2025-01-28T10:47:24Z ERR Failed to dial a quic connection error="failed to dial to edge with quic: INTERNAL_ERROR (local): write udp [::]:43281->[2606:4700:a0::4]:7844: sendmsg: network is unreachable" connIndex=0 event=0 ip=2606:4700:a0::4
cloudflared-1  | 2025-01-28T10:47:24Z INF Retrying connection in up to 1m4s connIndex=0 event=0 ip=2606:4700:a0::4


I have changed my /etc/docker/daemon.json to:
{
  "ipv6": true,
  "fixed-cidr-v6": "2001:db8:1::/64"
}
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