每次崩溃时Openwrt系统日志里显示:
Fri Mar 1 23:21:46 2024 daemon.info procd: Instance dnsmasq::cfg01411c s in a crash loop 7 crashes, 1522 seconds since last crash
同时可能伴有
Fri Mar 1 23:05:57 2024 kern.info kernel: [990016.737899] TCP: request_sock_TCPv6: Possible SYN flooding on port 53. Sending cookies. Check SNMP counters.
这样的提示
问题现象
当打开新网页较为频繁时,DNS服务老是崩溃,导致无法打开网页,除非重启smartdns服务。
每次崩溃时Openwrt系统日志里显示: Fri Mar 1 23:21:46 2024 daemon.info procd: Instance dnsmasq::cfg01411c s in a crash loop 7 crashes, 1522 seconds since last crash
同时可能伴有 Fri Mar 1 23:05:57 2024 kern.info kernel: [990016.737899] TCP: request_sock_TCPv6: Possible SYN flooding on port 53. Sending cookies. Check SNMP counters. 这样的提示
已尝试将Openwrt防火墙设置内的SYN flood防御关闭,仍然会出现此问题
运行环境
ImmortalWrt 23.05.1 r27304-31bc47589e / LuCI openwrt-23.05 branch git-23.313.50115-e3df634
校园网
重现步骤 随机出现在打开新网页的情况下,推测是解析任务比较重的情况下