Docker not starting “ could not delete the default

Question

Any ideas how to fix it?

Error starting daemon: Error initializing network controller: could not delete the default bridge network: network bridge has active endpoints

OS: Debian 8
Docker version: 1.9.0, build 76d6bc9

ifconfig output:

eth0      Link encap:Ethernet  HWaddr e0:3f:49:a0:9d:b4  
      inet addr:192.168.0.104  Bcast:192.168.0.255  Mask:255.255.255.0
      inet6 addr: fe80::e23f:49ff:fea0:9db4/64 Scope:Link
      UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
      RX packets:5231 errors:0 dropped:0 overruns:0 frame:0
      TX packets:4651 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:1000 
      RX bytes:3019389 (2.8 MiB)  TX bytes:858951 (838.8 KiB)

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:5568 errors:0 dropped:0 overruns:0 frame:0
          TX packets:5568 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:330007 (322.2 KiB)  TX bytes:330007 (322.2 KiB)

Answer 1

I had a similar issue after upgrading.

Run

sudo mv /var/lib/docker/network/files/ /tmp/dn-bak

to reset your networks. Then restart docker (sudo systemctl restart docker or sudo service docker restart depending on your OS).

If everything works again you can delete the dn-bak directory.