H3C Technologies H3C S12500-X Series Switches - Manual (Page 247)

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Figure 76 uRPF work flow
1. uRPF checks source address validity:
{
Discards packets with a source broadcast address.
{
Discards packets with an all-zero source address but a non-broadcast destination address. (A
packet with source address 0.0.0.0 and destination address 255.255.255.255 might be a
DHCP or BOOTP packet and cannot be discarded.)
{
Proceeds to step 2 for other packets.