icmpv6_err_convert
extern int icmpv6_err_convert(u8 type, u8 code,
int (*icmpv6_err_convert)(u8 type, u8 code, int *err);
harderr = pingv6_ops.icmpv6_err_convert(type, code, &err);
EXPORT_SYMBOL(icmpv6_err_convert);
pingv6_ops.icmpv6_err_convert = icmpv6_err_convert;
pingv6_ops.icmpv6_err_convert = dummy_icmpv6_err_convert;
harderr = icmpv6_err_convert(type, code, &err);
fatal = icmpv6_err_convert(type, code, &err);
harderr = icmpv6_err_convert(type, code, &err);
icmpv6_err_convert(type, code, &err);