It appears that the Ethernet hotplug in a fresh rcn netinstall does not trigger ifupdown:
ifconfig
eth0 Link encap:Ethernet HWaddr c8:a0:30:af:93:56
inet addr:192.168.1.196 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::caa0:30ff:feaf:9356/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:260 errors:0 dropped:0 overruns:0 frame:0
TX packets:81 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:43917 (42.8 KiB) TX bytes:7630 (7.4 KiB)
Interrupt:40
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
Cable unplugged
root@argus:~# [ 305.814940] libphy: 4a101000.mdio:00 - Link is Down
ifconfig
eth0 Link encap:Ethernet HWaddr c8:a0:30:af:93:56
inet addr:192.168.1.196 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::caa0:30ff:feaf:9356/64 Scope:Link
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:279 errors:0 dropped:0 overruns:0 frame:0
TX packets:81 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:45588 (44.5 KiB) TX bytes:7630 (7.4 KiB)
Interrupt:40
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
Note that eth0 is still up, so I tried udevadm:
root@argus:~# udevadm monitor
monitor will print the received events for:
UDEV - the event which udev sends out after rule processing
KERNEL - the kernel uevent
[ 431.041873] libphy: 4a101000.mdio:00 - Link is Up - 100/Full
[ 435.129578] libphy: 4a101000.mdio:00 - Link is Down
[ 439.350691] libphy: 4a101000.mdio:00 - Link is Up - 100/Full
There appear to be kernel printouts but no udev events?
Any ideas?