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Use ping -r to test the kernel behaviour with raw and ping sockets having the SO_DONTROUTE option. Since ipv4_ping_novrf() is called with different values of net.ipv4.ping_group_range, then it tests both raw and ping sockets (ping uses ping sockets if its user ID belongs to ping_group_range and raw sockets otherwise). With both socket types, sending packets to a neighbour (on link) host, should work. When the host is behind a router, sending should fail. Signed-off-by: Guillaume Nault <gnault@redhat.com> Reviewed-by: David Ahern <dsahern@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net> |
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| bpf | ||
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