eccl Posted January 29, 2017 Posted January 29, 2017 hi, I'd like to ask regarding the behavior of eht: I want to use eth wire connection as primary ISP connection and wireless connection (using wifi dongle, different network) as backup ISP connection. But when I disconnect the cable physically, the eth0.101 subinterface is sill up, keeping it's IP address. Here's the config: cat /etc/network/interfaces # In real world, this is used on the same situations of auto but the difference is that it will wait an event like "plug the cable" on ethernet interfaces.allow-hotplug eth0. . . # receive IP-Address from your DSL- or cablemodemauto eth0.101# Replace "dhcp" with "manual" in the next line, if you are going to use "pppoeconf eth0.101" to setup pppoe connectioniface eth0.101 inet dhcp after the cable disconnected, no change in status, UP, keeping IP address eth0.101 Link encap:Ethernet HWaddr 02:cb:05:83:0f:e3 inet addr:192.168.100.9 Bcast:192.168.100.15 Mask:255.255.255.240 inet6 addr: fe80::cb:5ff:fe83:fe3/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:44044 errors:0 dropped:0 overruns:0 frame:0 TX packets:27769 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:46705726 (44.5 MiB) TX bytes:2548115 (2.4 MiB) even the routing table does not change: root@lamobo-r1:~# netstat -nrKernel IP routing tableDestination Gateway Genmask Flags MSS Window irtt Iface0.0.0.0 192.168.100.1 0.0.0.0 UG 0 0 0 eth0.101192.168.100.0 0.0.0.0 255.255.255.240 U 0 0 0 eth0.101192.168.101.0 0.0.0.0 255.255.255.240 U 0 0 0 br0 root@lamobo-r1:~# uname -aLinux lamobo-r1 3.4.112-sun7i #10 SMP PREEMPT Sun Oct 23 15:49:51 CEST 2016 armv7l GNU/Linux System is updated with latest packages. Had you experienced the same behavior? something wrong with eth driver? any hint how to solve? Thanks in advance.
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