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f8696133f6
When ioctl(SIOCDARP/SIOCSARP) is issued for non-proxy entry (no ATF_COM) without arpreq.arp_dev[] set, arp_req_set() and arp_req_delete() looks up dev based on IPv4 address by ip_route_output(). Let's factorise the same code as arp_req_dev(). Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com> Link: https://lore.kernel.org/r/20240430015813.71143-4-kuniyu@amazon.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>