Re: [PATCH] net:ipv4: Packet is not forwarded if bc_forwarding not configured on ingress interface

On 2/28/21 5:53 PM, Henry Shen wrote:

When an IPv4 packet with a destination address of broadcast is received
on an ingress interface, it will not be forwarded out of the egress
interface if the ingress interface is not configured with bc_forwarding 
but the egress interface is. If both the ingress and egress interfaces
are configured with bc_forwarding, the packet can be forwarded
successfully.

This patch is to be inline with Cisco's implementation that packet can be 
forwarded if ingress interface is NOT configured with bc_forwarding, 
but egress interface is.

In Linux, forwarding decisions are made based on the ingress device, not
the egress device.