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Date: Fri, 9 Mar 2018 12:06:36 +0100 From: Jiri Benc <jbenc@...hat.com> To: Eric Dumazet <edumazet@...gle.com> Cc: "David S . Miller" <davem@...emloft.net>, netdev <netdev@...r.kernel.org>, Eric Dumazet <eric.dumazet@...il.com> Subject: Re: [PATCH net-next] net: do not create fallback tunnels for non-default namespaces On Thu, 8 Mar 2018 12:51:41 -0800, Eric Dumazet wrote: > Note that these tunnels are still created for the initial namespace, > to be the least intrusive for typical setups. Since this is a knob and must be turned on explicitly, why we don't get rid of the automatic interfaces even for the initial name space? It causes only problems nowadays, such as ip link add name gre0 type gre <tunnel_options...> failing with "File exists" even if there was no gre0 interface before. And of course, even with the error, the interface with the name "gre0" appears in the system. And of course, it does not have any of the options specified. This is highly confusing. Not to mention the autocreated gre0 interface is basically useless. I'd like to switch the knob on by default on my systems and have the kernel behave sane, finally, even without name spaces. Thanks! Jiri
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