// SPDX-FileCopyrightText: 2026 Echolot contributors // SPDX-License-Identifier: GPL-3.0-or-later //go:build !linux package selftest // probeEgressMTU: PMTUD via IP_MTU_DISCOVER is Linux-specific. Off-Linux the // self-test reports MTU as unproven rather than guessing (the daemon runs on // Linux in production; this keeps dev builds compiling). func probeEgressMTU(target string) MTUResult { return MTUResult{Target: target, Err: "egress MTU probe is Linux-only"} }