My host is SLES12 VM running on an ESX server. VM Host has interfaces which acquire DHCP IPs from the DHCP server running on ESX.
In my docker container (docker image: opensuse) I am running a NFS server and hence need external access. I want the container to acquire dhcp IP from the dhcp server running on ESX (just like my Host VM gets).
I have tried pipework but could not get it working. Here is what I did:
Enabled Promiscuous mode on ESX. Created new bridge (br1) and
attached it to Host interface eth0.
Using pipework added a new interface (eth1) in Docker container with an IP address using this command
pipework br1 $CONTAINERID 0/0
After I tried assigning DHCP IP to the new interface (eth1) of the
container, using the command pipework eth1 $CONTAINERID dhclient
But got the below error:
RTNETLINK answers: File exists
To resolve this I flushed the eth1 device in the container and ran
the command again. I observe that my docker daemon crashed. Docker
version: 1.12.3 (both client and server).
Please let me know what I am missing here. I want my container's interface/s to acquire the DHCP IPs from DHCP server running on ESX.