Description
I find that two containers with same network can not ping each other and the bridge network port bring down after the related docker network connected to a container.
But it work well after ifconfig xx up
Steps
- Create a network
$ docker network create -o "com.docker.network.bridge.name"="tt" test
- Create a container
$ docker run -it -d ubuntu /bin/sh
449xxxxxxxxxxxxxxxx
- Remove IP address from the bridge interface
$ ifconfig tt 0.0.0.0
check the interface state
4. Connect the network to the container
$ docker network connect test 449
Check the interface state again
Some information.
OS version
$ uname -a
Linux R710 4.15.0-54-generic #58~16.04.1-Ubuntu SMP Mon Jun 24 13:21:41 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 16.04.5 LTS
Release: 16.04
Codename: xenial
Docker versions
$ docker version
Client:
Version: 18.09.6
API version: 1.39
Go version: go1.10.8
Git commit: 481bc77
Built: Sat May 4 02:35:27 2019
OS/Arch: linux/amd64
Experimental: false
Server: Docker Engine - Community
Engine:
Version: 18.09.6
API version: 1.39 (minimum version 1.12)
Go version: go1.10.8
Git commit: 481bc77
Built: Sat May 4 01:59:36 2019
OS/Arch: linux/amd64
Experimental: false
Some logs
- /var/log/syslog
############################## Create the network #########################
Jul 9 15:28:58 R710 NetworkManager[1430]: <info> [1562657338.3870] manager: (tt): new Bridge device (/org/freedesktop/NetworkManager/Devices/3325)
Jul 9 15:28:58 R710 NetworkManager[1430]: <info> [1562657338.3989] devices added (path: /sys/devices/virtual/net/tt, iface: tt)
Jul 9 15:28:58 R710 NetworkManager[1430]: <info> [1562657338.3989] device added (path: /sys/devices/virtual/net/tt, iface: tt): no ifupdown configuration found.
Jul 9 15:28:58 R710 kernel: [89008.728995] IPv6: ADDRCONF(NETDEV_UP): tt: link is not ready
Jul 9 15:28:58 R710 avahi-daemon[1440]: Joining mDNS multicast group on interface tt.IPv4 with address 172.28.0.1.
Jul 9 15:28:58 R710 avahi-daemon[1440]: New relevant interface tt.IPv4 for mDNS.
Jul 9 15:28:58 R710 avahi-daemon[1440]: Registering new address record for 172.28.0.1 on tt.IPv4.
Jul 9 15:28:58 R710 NetworkManager[1430]: <info> [1562657338.4151] device (tt): state change: unmanaged -> unavailable (reason 'connection-assumed') [10 20 41]
Jul 9 15:28:58 R710 NetworkManager[1430]: <info> [1562657338.4171] keyfile: add connection in-memory (dbdc696b-7a09-4785-a6be-b5f8e5cadb93,"tt")
Jul 9 15:28:58 R710 NetworkManager[1430]: <info> [1562657338.4188] device (tt): state change: unavailable -> disconnected (reason 'connection-assumed') [20 30 41]
Jul 9 15:28:58 R710 NetworkManager[1430]: <info> [1562657338.4200] device (tt): Activation: starting connection 'tt' (dbdc696b-7a09-4785-a6be-b5f8e5cadb93)
Jul 9 15:28:58 R710 NetworkManager[1430]: <info> [1562657338.4205] device (tt): state change: disconnected -> prepare (reason 'none') [30 40 0]
Jul 9 15:28:58 R710 NetworkManager[1430]: <info> [1562657338.4210] device (tt): state change: prepare -> config (reason 'none') [40 50 0]
Jul 9 15:28:58 R710 NetworkManager[1430]: <info> [1562657338.4213] device (tt): state change: config -> ip-config (reason 'none') [50 70 0]
Jul 9 15:28:58 R710 NetworkManager[1430]: <info> [1562657338.4272] device (tt): state change: ip-config -> ip-check (reason 'none') [70 80 0]
Jul 9 15:28:58 R710 NetworkManager[1430]: <info> [1562657338.4280] device (tt): state change: ip-check -> secondaries (reason 'none') [80 90 0]
Jul 9 15:28:58 R710 NetworkManager[1430]: <info> [1562657338.4283] device (tt): state change: secondaries -> activated (reason 'none') [90 100 0]
Jul 9 15:28:58 R710 NetworkManager[1430]: <info> [1562657338.4323] device (tt): Activation: successful, device activated.
Jul 9 15:28:58 R710 nm-dispatcher: req:1 'up' [tt]: new request (1 scripts)
Jul 9 15:28:58 R710 nm-dispatcher: req:1 'up' [tt]: start running ordered scripts...
############################# Remove the IP address ########################
Jul 9 15:29:09 R710 avahi-daemon[1440]: Withdrawing address record for 172.28.0.1 on tt.
Jul 9 15:29:09 R710 avahi-daemon[1440]: Leaving mDNS multicast group on interface tt.IPv4 with address 172.28.0.1.
Jul 9 15:29:09 R710 avahi-daemon[1440]: Interface tt.IPv4 no longer relevant for mDNS.
######################### Connect network to the container #####################
Jul 9 15:29:33 R710 kernel: [89043.734597] tt: port 1(veth70904fd) entered blocking state
Jul 9 15:29:33 R710 kernel: [89043.734600] tt: port 1(veth70904fd) entered disabled state
Jul 9 15:29:33 R710 kernel: [89044.195153] tt: port 1(veth70904fd) entered blocking state
Jul 9 15:29:33 R710 kernel: [89044.195155] tt: port 1(veth70904fd) entered forwarding state
Jul 9 15:29:33 R710 kernel: [89044.195221] IPv6: ADDRCONF(NETDEV_CHANGE): tt: link becomes ready
Jul 9 15:29:33 R710 NetworkManager[1430]: <info> [1562657373.8856] device (tt): link connected
Jul 9 15:29:33 R710 NetworkManager[1430]: <info> [1562657373.8857] device (tt): state change: activated -> unmanaged (reason 'connection-assumed') [100 10 41]
Jul 9 15:29:33 R710 kernel: [89044.206876] tt: port 1(veth70904fd) entered disabled state
Jul 9 15:29:33 R710 kernel: [89044.210100] IPv6: ADDRCONF(NETDEV_UP): tt: link is not ready
Jul 9 15:29:33 R710 nm-dispatcher: req:1 'down' [tt]: new request (1 scripts)
Jul 9 15:29:33 R710 nm-dispatcher: req:1 'down' [tt]: start running ordered scripts...
Jul 9 15:29:33 R710 NetworkManager[1430]: <info> [1562657373.9189] device (tt): link disconnected