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I updated a server from Ubuntu 14.04 to 16.04. As expected, I had to rename my network interfaces fron eth0, etc to eno1, etc. However, of the two interfaces (one 'internal' and one 'external'), only one (internal) is working. I also have a kvm bridge configured so the internal interface is running the bridge.

/etc/network/interfaces:

auto eno1
iface eno1 inet manual

auto br1
iface br1 inet static
    address yyy.yyy.yyy.2
    netmask 255.255.255.0
    gateway yyy.yyy.yyy.254
    bridge_waitport 30
    bridge_ports eno1
    bridge_fd 1
    bridge_stp off
    bridge_maxwait 3330

auto eno2
iface eno2 inet static
   address xxx.xxx.xxx.169
   netmask 255.255.255.248
   broadcast xxx.xxx.xxx.175
   gateway xxx.xxx.xxx.174

Since I suddenly had problems with the second gateway (RTNETLINK answers: File exists), I manually defined the route

ip route show:

default via xxx.xxx.xxx.174 dev eno2
default via yyy.yyy.yyy.254 dev br1 onlink
yyy.yyy.yyy.0/24 dev br1  proto kernel  scope link  src yyy.yyy.yy.2
xxx.xxx.xxx.168/29 dev eno2  proto kernel  scope link  src xxx.xxx.xxx.169

Interface br1 works great, eno2 does absolutely nothing. I cannot get in or out on this interface. I also checked the router output and the correct MAC and IP address are in the correct VLAN.

Any suggestions?

timedistance
  • 11
  • 3

1 Answers1

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Might not be the case but do you ensure you had bridge-utils installed after the update?

sudo apt-get install bridge-utils
Andrew
  • 103
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