Create /etc/resolv.conf in initramfs for tailscale client #2
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On Debian systems, unless configured by something else, there isn't an /etc/resolv.conf in the initramfs, which hinders DNS resolution. Tailscale has its fallback DNS functionality, but that has problems [1] in the corner-case situation of a Debian initramfs environment: - no /etc/resolv.conf means tailscale (or golang?) attempts to use 127.0.0.1 as a DNS resolver - the loopback interface (lo) isn't brought up in the initramfs. linux sends the DNS traffic off-device (destined for 127.0.0.1) Even with the Tailscale fix for that issue, it's a fallback and there's a noticeable delay, so do the correct thing here and create /etc/resolv.conf. [1] tailscale/tailscale#6110
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On Debian systems, unless configured by something else, there isn't an /etc/resolv.conf in the initramfs, which hinders DNS resolution. Tailscale has its fallback DNS functionality, but that has problems in the corner-case situation of a Debian initramfs environment:
Even with the Tailscale fix for that issue, it's a fallback and there's a noticeable delay, so do the correct thing here and create /etc/resolv.conf.