Re: [PATCH] ipv6: fix incorrect unregistration of sysctl when last ip deleted

David Miller
2011-04-30T03:47:49Z

From: John Gardiner Myers <jgmyers@proofpoint.com>
Date: Fri, 29 Apr 2011 14:58:24 -0700

> The "how" parameter indicates the device is being deleted. In this
> case, the device is not being deleted.

It means that ipv6 is being disabled on the device.

Which is what happens when one of the following happens:

1) the MTU is too small to support ipv6 properly

2) no configured ipv6 addresses remain on the device

3) the device is being unregistered