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sample: bpf: xdp_router_ipv4: Allow the kernel to send arp requests
Forward the packet to the kernel if the gw router mac address is missing in to trigger ARP discovery. Fixes: 85bf1f5 ("samples: bpf: Convert xdp_router_ipv4 to XDP samples helper") Signed-off-by: Lorenzo Bianconi <[email protected]> Signed-off-by: Andrii Nakryiko <[email protected]> Link: https://lore.kernel.org/bpf/60bde5496d108089080504f58199bcf1143ea938.1653471558.git.lorenzo@kernel.org
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