Proxmox 5.2 Network Error

Jun 3, 2018
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I get the following error and the the server looses all network connection. Can't even log into console.

[ 172.705315] vmbr0: port 2(tap100i0) entered blocking state
[ 172.705317] vmbr0: port 2(tap100i0) entered disabled state
[ 172.705426] vmbr0: port 2(tap100i0) entered blocking state
[ 172.705443] vmbr0: port 2(tap100i0) entered forwarding state
[ 930.628296] device tap102i0 entered promiscuous mode
[ 930.641547] vmbr0: port 3(tap102i0) entered blocking state
[ 930.641548] vmbr0: port 3(tap102i0) entered disabled state
[ 930.641663] vmbr0: port 3(tap102i0) entered blocking state
[ 930.641665] vmbr0: port 3(tap102i0) entered forwarding state
[ 931.036466] device tap102i1 entered promiscuous mode
[ 931.050130] vmbr1: port 1(tap102i1) entered blocking state
[ 931.050132] vmbr1: port 1(tap102i1) entered disabled state
[ 931.050273] vmbr1: port 1(tap102i1) entered blocking state
[ 931.050274] vmbr1: port 1(tap102i1) entered forwarding state
 
Hello,

if you like help you have to provide more information like.
network setup
Type and model of the NIC.
The output of 'pveversion -v'
Are there more information in the syslog?
 
Here you go. Hope this helps

# cat /etc/network/interfaces
# network interface settings; autogenerated
# Please do NOT modify this file directly, unless you know what
# you're doing.
#
# If you want to manage part of the network configuration manually,
# please utilize the 'source' or 'source-directory' directives to do
# so.
# PVE will preserve these directives, but will NOT its network
# configuration from sourced files, so do not attempt to move any of
# the PVE managed interfaces into external files!

source /etc/network/interfaces.d/*

auto lo
iface lo inet loopback

#allow-hotplug enp0s25

iface enp4s0 inet manual

auto vmbr0
iface vmbr0 inet static
address 192.168.0.201
netmask 255.255.255.0
gateway 192.168.0.1
bridge_ports enp4s0
bridge_stp off
bridge_fd 0

auto vmbr1
iface vmbr1 inet manual
bridge_ports none
bridge_stp off
bridge_fd 0


# lspci | grep Ethernet
00:19.0 Ethernet controller: Intel Corporation Ethernet Connection (2) I218-V (rev 05)
04:00.0 Ethernet controller: Qualcomm Atheros QCA8171 Gigabit Ethernet (rev 10)

# pveversion -v

proxmox-ve: 5.2-2 (running kernel: 4.15.17-2-pve)
pve-manager: 5.2-1 (running version: 5.2-1/0fcd7879)
pve-kernel-4.15: 5.2-2
pve-kernel-4.15.17-2-pve: 4.15.17-10
pve-kernel-4.13.13-6-pve: 4.13.13-42
corosync: 2.4.2-pve5
criu: 2.11.1-1~bpo90
glusterfs-client: 3.8.8-1
ksm-control-daemon: not correctly installed
libjs-extjs: 6.0.1-2
libpve-access-control: 5.0-8
libpve-apiclient-perl: 2.0-4
libpve-common-perl: 5.0-31
libpve-guest-common-perl: 2.0-16
libpve-http-server-perl: 2.0-8
libpve-storage-perl: 5.0-23
libqb0: 1.0.1-1
lvm2: 2.02.168-pve6
lxc-pve: 3.0.0-3
lxcfs: 3.0.0-1
novnc-pve: 0.6-4
openvswitch-switch: 2.7.0-2
proxmox-widget-toolkit: 1.0-18
pve-cluster: 5.0-27
pve-container: 2.0-23
pve-docs: 5.2-4
pve-firewall: 3.0-9
pve-firmware: 2.0-4
pve-ha-manager: 2.0-5
pve-i18n: 1.0-5
pve-libspice-server1: 0.12.8-3
pve-qemu-kvm: 2.11.1-5
pve-xtermjs: 1.0-5
qemu-server: 5.0-26
smartmontools: 6.5+svn4324-1
spiceterm: 3.0-5
vncterm: 1.5-3

# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: enp4s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq master vmbr0 state UP group default qlen 1000
link/ether 70:85:c2:00:20:70 brd ff:ff:ff:ff:ff:ff
3: enp0s25: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/ether 70:85:c2:00:20:6e brd ff:ff:ff:ff:ff:ff
4: vmbr0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether 70:85:c2:00:20:70 brd ff:ff:ff:ff:ff:ff
inet 192.168.0.201/24 brd 192.168.0.255 scope global vmbr0
valid_lft forever preferred_lft forever
inet6 fd7e:2cee:931c:0:7285:c2ff:fe00:2070/64 scope global dynamic mngtmpaddr
valid_lft forever preferred_lft forever
inet6 fe80::7285:c2ff:fe00:2070/64 scope link
valid_lft forever preferred_lft forever
5: vmbr1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether f6:fe:31:d4:c9:f6 brd ff:ff:ff:ff:ff:ff
inet6 fe80::ec31:a4ff:fea3:cf68/64 scope link
valid_lft forever preferred_lft forever
6: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
link/ether 02:42:75:d8:b5:c6 brd ff:ff:ff:ff:ff:ff
inet 172.17.0.1/16 brd 172.17.255.255 scope global docker0
valid_lft forever preferred_lft forever
9: tap100i0: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master vmbr0 state UNKNOWN group default qlen 1000
link/ether 8e:f3:25:c6:17:cc brd ff:ff:ff:ff:ff:ff
10: tap102i0: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master vmbr0 state UNKNOWN group default qlen 1000
link/ether 9e:33:a8:71:9c:1d brd ff:ff:ff:ff:ff:ff
11: tap102i1: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master vmbr1 state UNKNOWN group default qlen 1000
link/ether f6:fe:31:d4:c9:f6 brd ff:ff:ff:ff:ff:ff
12: tap101i0: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master vmbr1 state UNKNOWN group default qlen 1000
link/ether fe:2d:04:8b:69:c9 brd ff:ff:ff:ff:ff:ff
 

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