[IPv6] DHCP6 problems prevent DHCP from starting

[Lloyd Parkes]

The exception maasserver.exceptions.DHCPConfigurationError needs some more work done to it.

Firstly, if this exception is thrown while configuring either of DHCP or DHCP6, then neither service will be configured. In my case, DHCP6 could not be configured, but DHCP would not get configured either.

Secondly, the exception doesn't say which version of DHCP could not be configured which is unhelpful given the first problem.

In my case this exception was being thrown from line 390 of maasserver/dhcp.py.

The root cause of this in my case was having my IPv4 and IPv6 networks configured in MAAS, defining a dynamic range on my IPv4 network and then disabling the IPv6 address on my router. This caused the SLAAC assigned address on my rack controller to disappear which in turn meant that dhcp.py couldn't find an interface to attach DHCP6 to.

[Lloyd Parkes (lloyd+lp)]

Herein is evidence that very little survives first contact with my lab network. You should just look at the trimmed log.

[Mike Pontillo (mpontillo)]

Thanks for your feedback and for taking the time to file this.

We're planning on doing some additional IPv6 work for the next release of MAAS, so I'll target this for MAAS 2.1.

[Andres Rodriguez (andreserl)]

**This is an automated message**

We believe this issue has now been resolved in the latest MAAS releases. As such, we are marking this bug as Fix Released. If you believe this issue is still present, please re-open this bug report and provide any relevant information.

Thanks.