Feature/dhcp disconnect

[jhughesbiot]

• Add a host network module with a gRPC client allowing access to host networking options
• Enable access to host network gRPC from test containers
• Implement connection.dhcp.disconnect test

[jboddey]

Tested and working on a regular Ubuntu laptop. Just want to try it on gLinux again. Only small issue I see is when the disconnect test occurs, an error from scapy/tcpdump is shown because the interface is no longer available. Would it be possible to pause the packet capture for this test?

[jhughesbiot]

Only small issue I see is when the disconnect test occurs, an error from scapy/tcpdump is shown because the interface is no longer available. Would it be possible to pause the packet capture for this test?

Are you referring to this?

WARNING: Socket <scapy.arch.linux.L2ListenSocket object at 0x7fabca1baaf0> failed with '[Errno 100] Network is down'. It was closed.

Seems this is only a warning and I checked all network captures after this log event and they all appear to continue as expected. I think it's just an indication that the physical connection is down but the capture is still active. Stopping and restarting captures during this shouldn't be necessary since it appears to continue on without interruption as expected.