Capture links/route table/neighbor table/nftables contents for v4/v6#125
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## 🤖 New release * `edera-check`: 0.2.19 -> 0.2.20 <details><summary><i><b>Changelog</b></i></summary><p> <blockquote> ## [0.2.20](v0.2.19...v0.2.20) - 2026-05-20 ### Other - Use journalctl export format ([#133](#133)) - Capture links/route table/neighbor table/nftables contents for v4/v6 ([#125](#125)) - Bump the cargo-updates group across 1 directory with 2 updates ([#131](#131)) - Update images digests ([#127](#127)) </blockquote> </p></details> --- This PR was generated with [release-plz](https://github.com/release-plz/release-plz/). Co-authored-by: edera-cultivation[bot] <165992271+edera-cultivation[bot]@users.noreply.github.com>
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These are all pretty trivial to capture with native Rust libraries so we don't need to rely on host tooling or binaries.
Capture links/route table/neighbor table/nftables rules on the node, for preinstall and postinstall.
Really, we should nsenter each pod and dump those rules in addition to the host rules, but host netfilter rules can help us catch rule conflicts with
kubeletor CNI (or a malfunctioningprotect-network) in some cases.Also, capture everything before and after (
preinstallandpostinstall) so a ruleset comparison/delta is possible.