rem: printf("icmpv6 ");
add: printf("ipv6-icmp ");
context: print(const struct ip6t_ip6 *ip,      const struct ip6t_entry_match *match,      int numeric){	const struct ip6t_icmp *icmpv6 = (struct ip6t_icmp *)match->data;	printf("icmpv6 ");	print_icmpv6type(icmpv6->type, icmpv6->code[0], icmpv6->code[1],		       icmpv6->invflags & IP6T_ICMP_INV,		       numeric);	if (icmpv6->invflags & ~IP6T_ICMP_INV)		printf("Unknown invflags: 0x%X ",		       icmpv6->invflags & ~IP6T_ICMP_INV);}