#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
Resolution: | Keywords: netifd
------------------------+------------------------
Comment (by dedeckeh@…):
Replying to [comment:6 anonymous]:
> But in all my tests (note: I opened this ticket) the WAN interfaces on
my two test systems (x86 VM and TL-WDR4300) are defined as proto 'dhcp',
not 'static' ...
>
> From my test VM running OpenWrt x86 BB r42625
> {{{
> root@OpenWrt:/# cat /etc/config/network
>
> config interface 'loopback'
> option ifname 'lo'
> option proto 'static'
> option ipaddr '127.0.0.1'
> option netmask '255.0.0.0'
>
> config interface 'lan'
> option ifname 'eth0'
> # option type 'bridge'
> option proto 'static'
> option ipaddr '192.168.100.1'
> option netmask '255.255.252.0'
> option ip6assign '60'
>
> config interface 'wan'
> option ifname 'eth1'
> option proto 'dhcp'
> option hostname 'openwrt'
> option defaultroute '1'
> option metric '10'
>
> config interface 'wan2'
> option ifname 'eth2'
> option proto 'dhcp'
> option mtu '1508'
> option defaultroute '1'
> option metric '20'
>
> #config interface 'wan6'
> # option ifname '@wan'
> # option proto 'dhcpv6'
>
> config interface 'vpn1'
> option ifname 'tun1'
> option proto 'none'
>
> config globals 'globals'
> option ula_prefix 'fd65:d55b:92fb::/48'
>
> ...
> }}}
>
>
>
>
> Could the different behaviour of netifd upon WAN NIC phy link loss be
because the eth1 and eth2 interfaces on the x86 VM are considered
"separate" devices, whereas in the case of physical WDR4300 the two WANs
are actually sitting on the same switch (eth0.2 and eth0.3) ?
Netifd relies on netlink events from the Linux kernel indicating link
loss/presence (LOWER_UP flag in ip link show). I'm wondering if these
events are generated by the Linux kernel on the X86 VM; you can easily
check this by calling ubus call network.device status and checking the
carrier state for the eth1 and eth2 devices if the WAN NIC phy link is
lost (This should also be visible in ip link show as the NO_CARRIER flag
should be displayed in case of link lost)
--
Ticket URL: <https://dev.openwrt.org/ticket/17953#comment:9>
OpenWrt <http://openwrt.org>
Opensource Wireless Router Technology
_______________________________________________
openwrt-tickets mailing list
[email protected]
https://lists.openwrt.org/cgi-bin/mailman/listinfo/openwrt-tickets
