/* Check DHCPv4 */
                if (ip->protocol == IPPROTO_UDP) {
                        struct udphdr *udp =
-                                       (network_data + sizeof(struct iphdr));
+                                       network_data + sizeof(struct iphdr);
                        if (ntohs(udp->dest) == 67 || ntohs(udp->dest) == 68)
                                nic_type |= NIC_TYPE_F_DHCP;
                }
 
                if (ipv6->nexthdr == IPPROTO_ICMPV6) /* Check NDP request */ {
                        struct icmp6hdr *icmp6 =
-                                       (network_data + sizeof(struct ipv6hdr));
+                                       network_data + sizeof(struct ipv6hdr);
                        if (icmp6->icmp6_type == NDISC_NEIGHBOUR_SOLICITATION)
                                nic_type |= NIC_TYPE_ICMPV6;
                } else if (ipv6->nexthdr == IPPROTO_UDP) /* Check DHCPv6 */ {
                        struct udphdr *udp =
-                                       (network_data + sizeof(struct ipv6hdr));
+                                       network_data + sizeof(struct ipv6hdr);
                        if (ntohs(udp->dest) == 546 || ntohs(udp->dest) == 547)
                                nic_type |= NIC_TYPE_F_DHCP;
                }