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bfd multihoming failover

从两个VPS位置实现BGP故障切换和多宿主

使用BGP从两个位置宣告相同前缀，实现自动故障切换。涵盖LOCAL_PREF、MED、AS-path prepending、BFD和优雅关闭，包含完整的BIRD2和FRR配置。

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high-availability nftables dns

使用BIRD2和BGP部署Anycast DNS：多站点配置

使用BIRD2和BIND9在多个VPS节点部署Anycast DNS。涵盖BGP路由通告、TSIG区域同步、健康检查故障切换和nftables防火墙加固。

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RPKI ROA配置BGP：创建ROA，在BIRD2和FRR中验证路由

在RIPE NCC门户中创建IPv4和IPv6 ROA，安装Routinator作为RTR缓存，在BIRD2和FRRouting中配置RPKI路由源验证，使用bgp.tools和RIPE Stat验证前缀状态。

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bgp bird2 routing

Linux VPS上配置BIRD2 BGP路由

在Debian 12或Ubuntu 24.04上安装BIRD2并配置BGP会话来宣告自有IP前缀。涵盖双栈配置、导出过滤器、持久化dummy接口、nftables规则和birdc验证。

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