From: Stefano Brivio <>
Date: Tue,  6 Mar 2018 22:16:27 +0100

> One single test implemented so far: test_pmtu_vti6_exception
> checks that the PMTU of a route exception, caused by a tunnel
> exceeding the link layer MTU, is affected by administrative
> changes of the tunnel MTU. Creation of the route exception is
> checked too.
> Requested-by: David Ahern <>
> Signed-off-by: Stefano Brivio <>
> ---
> v3: Explicitly set veth MTU before causing route exception to ensure we 
> actually
>     decrease the PMTU as second step in the test (issue reported by David 
> Ahern)
> v2: Fix error handling for setup_*() functions, make 'ip route get' output
>     parsing more robust, sleep after configuring vti6 addresses (all issues
>     reported by David Ahern)


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