Re: [PATCH net-next 3/3] net, neigh: Reject creating NUD_PERMANENT with NTF_MANAGED entries
From: David Ahern <hidden>
Date: 2021-10-14 03:11:17
Also in:
bpf
On 10/13/21 7:21 AM, Daniel Borkmann wrote:
The combination of NUD_PERMANENT + NTF_MANAGED is not supported and does
not make sense either given the former indicates a static/fixed neighbor
entry whereas the latter a dynamically resolved one. While it is possible
to transition from one over to the other, we should however reject such
creation attempts.
Fixes: 7482e3841d52 ("net, neigh: Add NTF_MANAGED flag for managed neighbor entries")
Suggested-by: David Ahern <dsahern@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
---
net/core/neighbour.c | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)Reviewed-by: David Ahern <dsahern@kernel.org>