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Add the following under the optional default route section for IPsec/GRE routes: "If you use this option make sure you have a static route pointing to your ISP as next hop for the Cloudflare anycast /32 IP address. Otherwise the tunnel will never establish due to a routing loop. "
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October 20, 2026 21:45
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Review coverage🟡 1 ownership area needs approval. Suggested reviewers: @alpdot @steve-cloudflare
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Add the following under the optional default route section for IPsec/GRE routes:
"If you use this option make sure you have a static route pointing to your ISP as next hop for the Cloudflare anycast /32 IP address. Otherwise the tunnel will never establish due to a routing loop. "
Summary
Add text that explains how to avoid routing loops when advertising a default route over GRE/IPsec tunnels
Documentation checklist