trying docker 1.9.0-rc4 networking

log.sh

root@debian-jessie:~# docker version
Client:
 Version:      1.9.0-rc4
 API version:  1.21
 Go version:   go1.4.2
 Git commit:   e6f5a3c
 Built:        Sat Oct 31 05:17:02 UTC 2015
 OS/Arch:      linux/amd64

Server:
 Version:      1.9.0-rc4
 API version:  1.21
 Go version:   go1.4.2
 Git commit:   e6f5a3c
 Built:        Sat Oct 31 05:17:02 UTC 2015
 OS/Arch:      linux/amd64
root@debian-jessie:~# docker run -itd --name=c1 busybox
eca801df8540370639285f53c35fb81f6ba252ad9bb8c7011363e3c0ae1ec812
root@debian-jessie:~# docker run -itd --name=c2 busybox
63cbbe302a4c7937fcc959de252cd230312fd0312365c879b5bc430ad373895b
root@debian-jessie:~# docker network inspect bridge
[
    {
        "Name": "bridge",
        "Id": "852aef5c4c40cfe2b757caa0ccfc6c7e705ed20db134595a8c025a655e41f12d",
        "Scope": "local",
        "Driver": "bridge",
        "IPAM": {
            "Driver": "default",
            "Config": [
                {
                    "Subnet": "172.18.0.0/16"
                }
            ]
        },
        "Containers": {
            "63cbbe302a4c7937fcc959de252cd230312fd0312365c879b5bc430ad373895b": {
                "EndpointID": "07a40d8612c3216be953cacfc3181d6779d4bb3eef541139688a262dd83fc59d",
                "MacAddress": "02:42:ac:12:00:03",
                "IPv4Address": "172.18.0.3/16",
                "IPv6Address": ""
            },
            "eca801df8540370639285f53c35fb81f6ba252ad9bb8c7011363e3c0ae1ec812": {
                "EndpointID": "73986182e335f064349664309a63fff4fe6b4b8fa8bbd21c1173b16a128674f7",
                "MacAddress": "02:42:ac:12:00:02",
                "IPv4Address": "172.18.0.2/16",
                "IPv6Address": ""
            }
        },
        "Options": {
            "com.docker.network.bridge.default_bridge": "true",
            "com.docker.network.bridge.enable_icc": "true",
            "com.docker.network.bridge.enable_ip_masquerade": "true",
            "com.docker.network.bridge.host_binding_ipv4": "0.0.0.0",
            "com.docker.network.bridge.name": "docker0",
            "com.docker.network.driver.mtu": "1500"
        }
    }
]
root@debian-jessie:~# docker exec c1 cat /etc/hosts
172.18.0.2      eca801df8540
127.0.0.1       localhost
::1     localhost ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
root@debian-jessie:~# docker exec c2 cat /etc/hosts
172.18.0.3      63cbbe302a4c
127.0.0.1       localhost
::1     localhost ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters