---
phase: 06-http-routing-auth-groups-and-rate-limiting
plan: 13
subsystem: fetchguard
tags: [ssrf, security, http-07]
requires: []
provides: [full IANA special-use non-public IP classification, zoned IPv6 rejection at dial time]
affects: [fetchguard]
key-files:
  modified: [fetchguard/ip.go, fetchguard/fetch.go, fetchguard/ip_test.go, fetchguard/fetch_test.go]
decisions:
  - "Zoned IPv6 dial targets are rejected outright with private_ip; classifier also strips zones so results match the unzoned form"
metrics:
  tasks: 2
  completed: 2026-09-21
requirements: [HTTP-07]
---

# Phase 6 Plan 13: fetchguard SSRF gap closure Summary

Full IANA special-use IPv4/IPv6 prefix tables (incl. 198.18.0.0/15, 192.0.0.0/24, 240.0.0.0/4, ::/96, 2001::/23, 2001:db8::/32, 3fff::/20, fec0::/10, ff00::/8) plus zone-stripping in the classifier and outright rejection of zoned dial targets.

## Tasks

1. Extended privateV4/privateV6 and zone-stripping in `isReservedOrPrivate`; NAT64/6to4 recursion untouched. Commit b1079ab.
2. `dialControl` returns errPrivateIP for zoned addresses before classification; smoke tests added. Commit b1079ab (single code commit, both tasks touch one fix).

## Deviations from Plan

None. Both tasks were committed together in one code commit.

## Verification

`go vet ./...` and `go test ./... -short` green; fetchguard also green under `-race`.

## Self-Check: PASSED