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DOCS-2971: Add missing DNSPolicyMode "Inline" value to Calico Cloud FelixConfig #2822

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DOCS-2971: Add missing DNSPolicyMode "Inline" value to Calico Cloud FelixConfig #2822

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3 changes: 2 additions & 1 deletion calico-cloud/reference/resources/felixconfig.mdx
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Expand Up @@ -318,8 +318,9 @@ failsafeOutboundHostPorts:

| Value | Description |
| ----------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| DelayDeniedPacket | Felix delays any denied packet that traversed a policy that included egress domain matches, but did not match. The packet is released after a fixed time, or after the destination IP address was programmed. |
| DelayDeniedPacket (default) | Felix delays any denied packet that traversed a policy that included egress domain matches, but did not match. The packet is released after a fixed time, or after the destination IP address was programmed. |
| DelayDNSResponse | Felix delays any DNS response until related IPSets are programmed. This introduces some latency to all DNS packets (even when no IPSet programming is required), but it ensures policy hit statistics are accurate. This is the recommended setting when you are making use of staged policies or policy rule hit statistics. A Linux kernel version of 3.13 or greater is required to use `DelayDNSResponse`. For earlier kernel versions, this value is modified to `DelayDeniedPacket`. |
| Inline | Parses DNS response inline with DNS response packet processing within iptables. This guarantees the DNS rules reflect any change immediately. This mode works for iptables only and matches the same mode for `BPFDNSPolicyMode`. This setting is ignored on Windows and `NoDelay` is always used. |
| NoDelay | Felix does not introduce any delay to the packets. DNS rules may not have been programmed by the time the first packet traverses the policy rules. Client applications need to handle reconnection attempts if initial connection attempts fail. This may be problematic for some applications or for very low DNS TTLs. |

On Windows, or when using the eBPF dataplane, this setting is ignored. Windows always uses `NoDelay` while eBPF has its own [BPFDNSPolicyMode](#bpfdnspolicymode) option.
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3 changes: 2 additions & 1 deletion calico-cloud_versioned_docs/version-22-2/reference/resources/felixconfig.mdx
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Original file line number Diff line number Diff line change
Expand Up @@ -318,8 +318,9 @@ failsafeOutboundHostPorts:

| Value | Description |
| ----------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| DelayDeniedPacket | Felix delays any denied packet that traversed a policy that included egress domain matches, but did not match. The packet is released after a fixed time, or after the destination IP address was programmed. |
| DelayDeniedPacket (default) | Felix delays any denied packet that traversed a policy that included egress domain matches, but did not match. The packet is released after a fixed time, or after the destination IP address was programmed. |
| DelayDNSResponse | Felix delays any DNS response until related IPSets are programmed. This introduces some latency to all DNS packets (even when no IPSet programming is required), but it ensures policy hit statistics are accurate. This is the recommended setting when you are making use of staged policies or policy rule hit statistics. A Linux kernel version of 3.13 or greater is required to use `DelayDNSResponse`. For earlier kernel versions, this value is modified to `DelayDeniedPacket`. |
| Inline | Parses DNS response inline with DNS response packet processing within iptables. This guarantees the DNS rules reflect any change immediately. This mode works for iptables only and matches the same mode for `BPFDNSPolicyMode`. This setting is ignored on Windows and `NoDelay` is always used. |
| NoDelay | Felix does not introduce any delay to the packets. DNS rules may not have been programmed by the time the first packet traverses the policy rules. Client applications need to handle reconnection attempts if initial connection attempts fail. This may be problematic for some applications or for very low DNS TTLs. |

On Windows, or when using the eBPF dataplane, this setting is ignored. Windows always uses `NoDelay` while eBPF has its own [BPFDNSPolicyMode](#bpfdnspolicymode) option.
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