dhcpcd-discuss

Hi Jan

On 06/01/2018 11:18, Jan Herrygers wrote:
> I get the argument provided in the archive for disabling IPv6 in the kernel.
>
> When does dhcpcd disable the kernel IPv6 autoconf and address 
> generation? If it is only when dhcpcd is started, then I guess it is 
> just as easy for me to re-enable the kernel IPv6 after starting dhcpcd 
> if I want it.

Each time dhcpcd configures the interface.
This generally happens when dhcpcd is started an when the carrier comes 
up for the interface.

> For the other thing I mentioned:
> >     - if dhcpcd is started with the -6 flag, it keeps running in the
> >     foreground after configuring the IPv6 address till it times out
> >     and exits. It doesn't fork to the background. I have a tcpdump of
> >     the router advertisement that I receive.
> >     --> I'd expect dhcpcd to fork to the background after configuring
> >     the IPv6 addresses, so it can handle additional router advertisements
> I don't see how the archive post supports dhcpcd exiting rather than 
> forking to the background when it is started with the -6 flag. Can you 
> enlighten me on that one?

Ah sorry, I missed that part.
If the RA doesn't contain a DNS entry then it won't fork at this point.
See the ipv6ra_fork option in dhcpcd.conf(5).

Roy