rem: print_mac(((struct ip6t_mac_info *)match->data)->srcaddr, ((struct ip6t_mac_info *)match->data)->invert);
add: if (((struct ip6t_mac_info *)match->data)->invert) printf("! ");  print_mac(((struct ip6t_mac_info *)match->data)->srcaddr);
context: print(const struct ip6t_ip6 *ip,      const struct ip6t_entry_match *match,      int numeric){	printf("MAC ");	print_mac(((struct ip6t_mac_info *)match->data)->srcaddr,		  ((struct ip6t_mac_info *)match->data)->invert);}