mguschin f14d4f8f33 Migrate to pure nftables routing (remove iptables/ipset) ...

- Replace hybrid iptables/ipset/nftables approach with pure nftables
- Add nftables native set for Russian IP ranges (populated from RIPE)
- Create update-direct-routes.sh script to load IP ranges from RIPE database
- Remove ipset and iptables dependencies from postup.sh/postdown.sh
- Add automatic weekly cron job for IP range updates
- Update all documentation to reflect the new approach

Benefits:
- More reliable: no iptables/nftables conflicts
- Simpler debugging: single tool for all rules (nft list ruleset)
- Atomic rule loading: prevents partial failures
- IP-based routing is more predictable than DNS-based

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

2026-02-19 18:02:28 +03:00

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