Re: NM removes default route installed by zebra

On Mon, 2018-03-26 at 16:24 +0200, Thomas Haller wrote:

 ++ ipv6.may-fail             = FALSE

set ipv6.may-fail to yes, if you want that the connection stays up
without IPv6.

I don't want the connection to be considered up until IPv6
configuration has happened.  Other things start on the machine that
require the interface to have IPv6 addressing in place.

here you say "statically assigned". Below you say "that defeats the
purpose of using a dynamic routing protocol".

Statically assigned IP addresses and dynamic routing protocols are
orthogonal.  You can run a dynamic routing protocol while statically
assigning IP addresses.  Moreover the dynamic routing in this situation
is on IPv4 only.

probably not. IPv6 Neighbour discovery times out.

Yes, indeed.  I have discovered that my router was not answering router
discovery requests.  I have since fixed that.  But that might have been
why that discovery was timing out.

I don't know what zebra is or does.

Zebra is a routing software package that provides TCP/IP based routing
services with routing protocols support such as RIP, OSPF and BGP. 

It's a bad idea to have two
programs (NetworkManager and zebra(?)) configuring the same

Zebra doesn't configure network devices.  It manages routing [tables].

One should be able to use one tool (NM) to manage network interface
addressing and another (Zebra) to manage routing.

But in this case, it seems Zebra is not restoring the default route it
gets from OSPF if/when NM tears down the interface during initial
configuration.  I will experiment and see if I can reproduce this
outside of system booting.

What you want.

NM to manage the interface addressing.

What does zebra do?

Manage the routing tables.

(e.g. the bogus ::2 token).

Why is the ::2 token bogus?  How does one configure the host portion of
the IP address(es) constructed from the IPv6 router advertisement's
prefixes to be a static value if it's not with the token?

I think you should fix the configuration, simpliest by just deleting
this profile and creating a new one.

But we have not yet identified what the correct configuration is yet.


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