Question
promiscuous mode SSH freeze if no activity for about 1 min
- Posted July 19, 2016
- NetworkingIPv6
Jul 19 03:56:54 App-Docker kernel: [76610.517153] docker0: port 1(veth62a1f2c) entered disabled state
Jul 19 03:56:54 App-Docker kernel: [76610.541447] docker0: port 1(veth62a1f2c) entered disabled state
Jul 19 03:56:54 App-Docker kernel: [76610.542349] device veth62a1f2c left promiscuous mode
Jul 19 03:56:54 App-Docker kernel: [76610.542357] docker0: port 1(veth62a1f2c) entered disabled state
Jul 19 03:59:00 App-Docker kernel: [76736.443964] device veth0fb9910 entered promiscuous mode
Jul 19 03:59:00 App-Docker kernel: [76736.444224] IPv6: ADDRCONF(NETDEV_UP): veth0fb9910: link is not ready
Jul 19 03:59:00 App-Docker kernel: [76736.583446] IPv6: ADDRCONF(NETDEV_CHANGE): veth0fb9910: link becomes ready
Jul 19 03:59:00 App-Docker kernel: [76736.583478] docker0: port 1(veth0fb9910) entered forwarding state
Jul 19 03:59:00 App-Docker kernel: [76736.583483] docker0: port 1(veth0fb9910) entered forwarding state
Jul 19 03:59:15 App-Docker kernel: [76751.584064] docker0: port 1(veth0fb9910) entered forwarding state
Jul 19 04:02:17 App-Docker kernel: [76933.645427] docker0: port 1(veth0fb9910) entered disabled state
Jul 19 04:02:17 App-Docker kernel: [76933.669870] docker0: port 1(veth0fb9910) entered disabled state
Jul 19 04:02:17 App-Docker kernel: [76933.670768] device veth0fb9910 left promiscuous mode
Jul 19 04:02:17 App-Docker kernel: [76933.670776] docker0: port 1(veth0fb9910) entered disabled state
Jul 19 04:02:17 App-Docker kernel: [76933.683763] device veth9e31f0c entered promiscuous mode
Jul 19 04:02:17 App-Docker kernel: [76933.683869] IPv6: ADDRCONF(NETDEV_UP): veth9e31f0c: link is not ready
Jul 19 04:02:17 App-Docker kernel: [76933.683873] docker0: port 1(veth9e31f0c) entered forwarding state
Jul 19 04:02:17 App-Docker kernel: [76933.683877] docker0: port 1(veth9e31f0c) entered forwarding state
Jul 19 04:02:17 App-Docker kernel: [76933.987440] IPv6: ADDRCONF(NETDEV_CHANGE): veth9e31f0c: link becomes ready
Jul 19 04:02:32 App-Docker kernel: [76948.704082] docker0: port 1(veth9e31f0c) entered forwarding state
it seems my server run into promiscuous mode very frequently
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There is a parameter you can set with ssh clients called KeepAliveInterval. In linux, you can edit either per account client (~/.ssh/config) or per installation (/etc/ssh/ssh_config) and set the value
This howtogeek.com link has more info. Note: not sure how to set it with other clients, like PuTTY, as I haven’t needed it.