void
initialize_eth_header(struct ether_hdr *eth_hdr, struct ether_addr *src_mac,
- struct ether_addr *dst_mac, uint8_t vlan_enabled, uint16_t van_id);
+ struct ether_addr *dst_mac, uint8_t ipv4, uint8_t vlan_enabled,
+ uint16_t van_id);
uint16_t
initialize_udp_header(struct udp_hdr *udp_hdr, uint16_t src_port,