OpenWRT package of Cloudflare Tunnel client (Cloudflared) compiled against Go with Cloudflare experimental patches, specifically for AArch64 Cortex A53.
OpenWRT has an official package[^1] for Cloudflared that appears to work well. However, Cloudflared has to be compiled with a fork of go to support post-quantum encryption since version 2024.1.0[^2]. Unfortunately, OpenWRT maintainers refuse[^3] to compile it against the downstream patched Go and continue to use the official Go, resulting in broken Cloudflared binaries with the following runtime errors:
Wed Mar 6 15:32:28 2024 daemon.err cloudflared[14145]: 2024-03-06T07:32:28Z ERR Failed to create new quic connection error="failed to dial to edge with quic: INTERNAL_ERROR (local): tls: CurvePreferences includes unsupported curve" connIndex=0 event=0 ip=198.41.192.57
Wed Mar 6 15:32:28 2024 daemon.err cloudflared[14145]: 2024-03-06T07:32:28Z INF Retrying connection in up to 2s connIndex=0 event=0 ip=198.41.192.57
Wed Mar 6 15:32:30 2024 daemon.err cloudflared[14145]: 2024-03-06T07:32:30Z ERR Failed to create new quic connection error="failed to dial to edge with quic: INTERNAL_ERROR (local): tls: CurvePreferences includes unsupported curve" connIndex=0 event=0 ip=198.41.192.107
Wed Mar 6 15:32:30 2024 daemon.err cloudflared[14145]: 2024-03-06T07:32:30Z INF Retrying connection in up to 4s connIndex=0 event=0 ip=198.41.192.107
Wed Mar 6 15:32:33 2024 daemon.err cloudflared[14145]: 2024-03-06T07:32:32Z ERR Failed to create new quic connection error="failed to dial to edge with quic: INTERNAL_ERROR (local): tls: CurvePreferences includes unsupported curve" connIndex=0 event=0 ip=198.41.192.67
Wed Mar 6 15:32:33 2024 daemon.err cloudflared[14145]: 2024-03-06T07:32:32Z INF Retrying connection in up to 8s connIndex=0 event=0 ip=198.41.192.67
Wed Mar 6 15:32:35 2024 daemon.err cloudflared[14145]: 2024-03-06T07:32:35Z ERR Failed to create new quic connection error="failed to dial to edge with quic: INTERNAL_ERROR (local): tls: CurvePreferences includes unsupported curve" connIndex=0 event=0 ip=198.41.192.37
Wed Mar 6 15:32:35 2024 daemon.err cloudflared[14145]: 2024-03-06T07:32:35Z INF Retrying connection in up to 16s connIndex=0 event=0 ip=198.41.192.37
Wed Mar 6 15:32:47 2024 daemon.err cloudflared[14145]: 2024-03-06T07:32:47Z ERR Failed to create new quic connection error="failed to dial to edge with quic: INTERNAL_ERROR (local): tls: CurvePreferences includes unsupported curve" connIndex=0 event=0 ip=198.41.192.47
Wed Mar 6 15:32:47 2024 daemon.err cloudflared[14145]: 2024-03-06T07:32:47Z INF Retrying connection in up to 32s connIndex=0 event=0 ip=198.41.192.47
Wed Mar 6 15:33:04 2024 daemon.err cloudflared[14145]: 2024-03-06T07:33:04Z ERR Failed to create new quic connection error="failed to dial to edge with quic: INTERNAL_ERROR (local): tls: CurvePreferences includes unsupported curve" connIndex=0 event=0 ip=198.41.192.57