netdev - Re: [PATCH net-next 3/5] selftests: fib-onlink: Add a test case for IPv4 multicast gateway

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Message-ID: <24993fc6-4f37-4873-9435-6e2ab844e9ad@kernel.org>
Date: Mon, 12 Jan 2026 08:26:40 -0700
From: David Ahern <dsahern@...nel.org>
To: Ido Schimmel <idosch@...dia.com>, netdev@...r.kernel.org
Cc: davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com,
 edumazet@...gle.com, horms@...nel.org, petrm@...dia.com
Subject: Re: [PATCH net-next 3/5] selftests: fib-onlink: Add a test case for
 IPv4 multicast gateway

On 1/11/26 5:08 AM, Ido Schimmel wrote:
> A multicast gateway address should be rejected when "onlink" is
> specified, but it is only tested as part of the IPv6 tests. Add an
> equivalent IPv4 test.
> 
>  # ./fib-onlink-tests.sh -v
>  [...]
>  COMMAND: ip ro add table 254 169.254.101.12/32 via 233.252.0.1 dev veth1 onlink
>  Error: Nexthop has invalid gateway.
> 
>  TEST: Invalid gw - multicast address                      [ OK ]
>  [...]
>  COMMAND: ip ro add table 1101 169.254.102.12/32 via 233.252.0.1 dev veth5 onlink
>  Error: Nexthop has invalid gateway.
> 
>  TEST: Invalid gw - multicast address, VRF                 [ OK ]
>  [...]
>  Tests passed:  37
>  Tests failed:   0
> 
> Reviewed-by: Petr Machata <petrm@...dia.com>
> Signed-off-by: Ido Schimmel <idosch@...dia.com>
> ---
>  tools/testing/selftests/net/fib-onlink-tests.sh | 7 ++++++-
>  1 file changed, 6 insertions(+), 1 deletion(-)
> 

Reviewed-by: David Ahern <dsahern@...nel.org>