1. syslog报错May 21 16:06:54 XDsv03 kernel: [1060999.019431] net_ratelimit: 109 callbacks suppressedMay 21 16:06:54 XDsv03 kernel: [1060999.019457] neighbour: ndisc_cache: neighbor table overflow!May 21 16:06:54 XDsv03 kernel: [1060999.019515] neighbour: ndisc_cache: neighbor table overflow!May 21 16:06:54 XDsv03 kernel: [1060999.083589] neighbour: ndisc_cache: neighbor table overflow!2. 含义内核的 IPv6 邻居缓存ndisc_cache 已满。这个表负责保存 IPv6 地址到 MAC 地址的映射类似 IPv4 的 ARP 表。当表溢出时系统无法再解析新的邻居会导致网络连接问题并持续刷出这类警告。3. 解决方法增大邻居表容量# 快速应用配置立即生效重启后失效sudosysctl-wnet.ipv4.neigh.default.gc_thresh11024sudosysctl-wnet.ipv4.neigh.default.gc_thresh24096sudosysctl-wnet.ipv4.neigh.default.gc_thresh38192sudosysctl-wnet.ipv6.neigh.default.gc_thresh11024sudosysctl-wnet.ipv6.neigh.default.gc_thresh24096sudosysctl-wnet.ipv6.neigh.default.gc_thresh38192