arp: missing in_same_network check

[Dirbaio]

process_arp is missing an in_same_network check here

smoltcp/src/iface/interface.rs

Line 1043 in db18514

if source_protocol_addr.is_unicast() && source_hardware_addr.is_unicast() {

like this one

smoltcp/src/iface/interface.rs

Line 958 in db18514

if self.in_same_network(&ip_addr) {