openwrt lan口未知原因断网的修补方案记录

2023-03-17 01:23| 来源: 网络整理| 查看: 265

前言：

由于openwrt出现莫名故障，暂未查明具体原因，临时写了个脚本进行补救，该文对此进行记录。

故障描述：主要硬件信息：

cpu：N3150

网卡：

root@OpenWrt:~# lspci|grep -i 'eth' 01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 07) 02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 07)故障表现：

lan口随机出现断网情况，拔插lan口连接ap的网线即可再次正常工作，并且日志中并无故障相关信息，暂未找到实际原因。

怀疑过系统问题，刷了多个版本的openwrt后故障依然存在。怀疑过与ap不兼容，在lan口加交换机后连接ap，依然会出现该问题。拔插交换机-op段的网线可恢复，拔插交换机-ap段的网线无效。

解决思路：

由于并未找到实际原因，以及拔插lan口后可以恢复网络，打算暂时写个脚本让主路由能正常工作。具体逻辑是通过循环ping ap的ip判断内网是否通畅，不通畅则重启lan口。

ping -c 1 -W 1 ip;ping检测命令，超时判断减少为1s ifup lan;#重启lan口命令初始代码：ip=192.168.3.2;#此处填内网验证ip for((i=0;i&1 &

执行结果日志：

ip信息已删除

Sun Feb 19 06:37:07 2023 daemon.info watchcat[25546]: Could not reach 8.8.8.8 for 60. Rebooting after reaching 21600 此处成功发现内网已经断开，将lan口重启 Sun Feb 19 06:38:48 2023 user.notice root: lan error, restart lan! Sun Feb 19 06:38:48 2023 daemon.notice netifd: Interface 'lan' is now down Sun Feb 19 06:38:48 2023 daemon.info avahi-daemon[3771]: Withdrawing address record for 240e:::::1 on eth0. Sun Feb 19 06:38:48 2023 daemon.notice ttyd[19019]: [2023/02/19 06:38:48:4523] N: rops_handle_POLLIN_netlink: DELADDR Sun Feb 19 06:38:48 2023 daemon.info avahi-daemon[3771]: Registering new address record for fe80:::::4e24 on eth0.*. Sun Feb 19 06:38:48 2023 daemon.info avahi-daemon[3771]: Registering new address record for 240e:::::1 on eth0.*. Sun Feb 19 06:38:48 2023 daemon.info avahi-daemon[3771]: Withdrawing address record for 192.168.3.1 on eth0. Sun Feb 19 06:38:48 2023 daemon.info avahi-daemon[3771]: Leaving mDNS multicast group on interface eth0.IPv4 with address 192.168.3.1. Sun Feb 19 06:38:48 2023 daemon.notice ttyd[19019]: [2023/02/19 06:38:48:5212] N: rops_handle_POLLIN_netlink: DELADDR Sun Feb 19 06:38:48 2023 daemon.notice ttyd[19019]: [2023/02/19 06:38:48:5213] N: rops_handle_POLLIN_netlink: DELADDR Sun Feb 19 06:38:48 2023 daemon.notice ttyd[19019]: [2023/02/19 06:38:48:5214] N: rops_handle_POLLIN_netlink: DELADDR Sun Feb 19 06:38:48 2023 daemon.notice netifd: Interface 'lan' is disabled Sun Feb 19 06:38:48 2023 daemon.notice netifd: Network device 'eth0' link is down Sun Feb 19 06:38:48 2023 daemon.notice netifd: Interface 'lan' has link connectivity loss Sun Feb 19 06:38:48 2023 daemon.info avahi-daemon[3771]: Interface eth0.IPv4 no longer relevant for mDNS. Sun Feb 19 06:38:48 2023 daemon.info avahi-daemon[3771]: Interface eth0.IPv6 no longer relevant for mDNS. Sun Feb 19 06:38:48 2023 daemon.info avahi-daemon[3771]: Leaving mDNS multicast group on interface eth0.IPv6 with address 240e:::1. Sun Feb 19 06:38:48 2023 daemon.info avahi-daemon[3771]: Withdrawing address record for fe80:::4e24 on eth0. Sun Feb 19 06:38:48 2023 daemon.info avahi-daemon[3771]: Withdrawing address record for fd1a:::1 on eth0. Sun Feb 19 06:38:48 2023 daemon.info avahi-daemon[3771]: Withdrawing address record for 240e:::::1 on eth0. Sun Feb 19 06:38:48 2023 kern.info kernel: [97420.894078] eth0: 0xffffc9000006d000, 00:00:00:00:00:00, IRQ 119 Sun Feb 19 06:38:48 2023 daemon.notice netifd: Interface 'lan' is enabled Sun Feb 19 06:38:48 2023 daemon.notice netifd: Interface 'lan' is setting up now Sun Feb 19 06:38:48 2023 daemon.info avahi-daemon[3771]: Joining mDNS multicast group on interface eth0.IPv4 with address 192.168.31.1. Sun Feb 19 06:38:48 2023 daemon.info avahi-daemon[3771]: New relevant interface eth0.IPv4 for mDNS. Sun Feb 19 06:38:48 2023 daemon.info avahi-daemon[3771]: Registering new address record for 192.168.31.1 on eth0.IPv4. Sun Feb 19 06:38:48 2023 daemon.info avahi-daemon[3771]: Joining mDNS multicast group on interface eth0.IPv6 with address 240e:::1. Sun Feb 19 06:38:48 2023 daemon.info avahi-daemon[3771]: New relevant interface eth0.IPv6 for mDNS. Sun Feb 19 06:38:48 2023 daemon.notice netifd: Interface 'lan' is now up Sun Feb 19 06:38:48 2023 daemon.info avahi-daemon[3771]: Registering new address record for 240e:::::1 on eth0.*. Sun Feb 19 06:38:48 2023 daemon.info avahi-daemon[3771]: Registering new address record for fd1a::::1 on eth0.*. Sun Feb 19 06:38:49 2023 daemon.err odhcpd[2637]: Failed to send to ff02::1%lan@eth0 (Address not available) Sun Feb 19 06:38:50 2023 daemon.info samba4-server: io_uring module found, enabling VFS io_uring. (also needs Kernel 5.4+ Support) Sun Feb 19 06:38:50 2023 daemon.info samba4-server: io_uring module found, enabling VFS io_uring. (also needs Kernel 5.4+ Support) Sun Feb 19 06:38:50 2023 daemon.info samba4-server: io_uring module found, enabling VFS io_uring. (also needs Kernel 5.4+ Support) Sun Feb 19 06:38:50 2023 daemon.info samba4-server: io_uring module found, enabling VFS io_uring. (also needs Kernel 5.4+ Support) Sun Feb 19 06:38:52 2023 kern.info kernel: [97425.132501] r8168: eth0: link up Sun Feb 19 06:38:52 2023 kern.info kernel: [97425.134542] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready Sun Feb 19 06:38:52 2023 daemon.notice netifd: Network device 'eth0' link is up Sun Feb 19 06:38:52 2023 daemon.notice netifd: Interface 'lan' has link connectivity

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