#17953: netifd - hotplug ifdown events and behaving differently in VM (NIC and
vNIC
link loss)
-----------------------+------------------------
Reporter: anonymous | Owner: developers
Type: defect | Status: new
Priority: normal | Milestone:
Component: packages | Version: Trunk
Keywords: netifd |
-----------------------+------------------------
Two issues I've come across while testing OpenWrt (CC trunk and BB-14.07
HEAD) + mwan3 in a VirtualBox VM v4.3.16 (x86):
- netifd doesn't seem to send hotplug ifdown trigger, see
https://forum.openwrt.org/viewtopic.php?pid=247780#p247780
- in a x86 VM under VirtualBox netifd seems to "flush" routes upon vNIC
link loss (unchecking of "Cable Connected"), but it doesn't behave the
same on a physical router (TL-WDR4300)
For details, please check today's discussion between Adze and kpv at
https://forum.openwrt.org/viewtopic.php?id=39052&p=37
In a VM, BEFORE disconnecting wan / eth1:
{{{
root@OpenWrt:~# ip route list table 1 default dev eth1
default via 10.0.3.1
root@OpenWrt:~#
}}}
whereas immediately after disconnecting wan / eth1 (unchecking of "Cable
Connected") this route gets deleted:
{{{
root@OpenWrt:~# ip route list table 1 default dev eth1
root@OpenWrt:~#
}}}
However, in case of a physical TP-LINK TL-WDR4300 router, that route isn't
flushed.
In VM the "unplugged" NIC:
{{{
root@OpenWrt:~# ip link sh
...
7: eth1: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc hfsc state
DOWN mode DEFAULT group default qlen 5
link/ether 08:00:27:c1:de:6d brd ff:ff:ff:ff:ff:ff
root@OpenWrt:~# ifconfig
...
eth1 Link encap:Ethernet HWaddr 08:00:27:C1:DE:6D
inet6 addr: fe80::a00:27ff:fec1:de6d/64 Scope:Link
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:611459 errors:0 dropped:0 overruns:0 frame:0
TX packets:336570 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:5
RX bytes:808462195 (771.0 MiB) TX bytes:25230266 (24.0 MiB)
}}}
netifd - 2014-09-08-46c569989f984226916fec28dd8ef152a664043e
OpenWrt BB 14.07 r42625
--
Ticket URL: <https://dev.openwrt.org/ticket/17953>
OpenWrt <http://openwrt.org>
Opensource Wireless Router Technology
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