Hi Gary, The issue has been gone since the version of 9f5ca5efbd0bb00c9d3577b95e6322e85cb0b118. Please check that.
Thanks, Jiaxin > -----Original Message----- > From: edk2-devel [mailto:[email protected]] On Behalf Of > Guoheyi > Sent: Wednesday, April 5, 2017 6:56 PM > To: [email protected] > Cc: Tian, Feng <[email protected]>; Wu, Jiaxin <[email protected]>; Fu, > Siyuan <[email protected]>; Zeng, Star <[email protected]> > Subject: [edk2] [DxeNetLib] Why do we restrict each field to have the same > leading zero format? > > Hi folks, > > We are using NetLibAsciiStrToIp6 function in DxeNetLib.c of MdeModulePkg > to convert string to IPv6 address. We found this function will return invalid > parameter with below input: > 2001:3456:789a:0000:f012:2:2003:2005 > > We trace the code and believe it is handled by the branch in line 2955: > > if ((Cnt != 0) && (Cnt < 4) && LeadZero) { > return EFI_INVALID_PARAMETER; > } > > I think the reason is that we have field 3 of "0000" which has leading zero > and > causes LeadZero flag to be true, and it requires all the following fields to > have > the same leading zero format, while field 5 of "2" is not. > > I checked RFC 4291 and only found below text; I didn't find any restriction > that requires each field to have the same leading zero format. > > 1. The preferred form is x:x:x:x:x:x:x:x, where the 'x's are one to > four hexadecimal digits of the eight 16-bit pieces of the address. > Examples: > > ABCD:EF01:2345:6789:ABCD:EF01:2345:6789 > > 2001:DB8:0:0:8:800:200C:417A > > Note that it is not necessary to write the leading zeros in an > individual field, but there must be at least one numeral in every > field (except for the case described in 2.). > > Could you help to confirm whether it is a bug or there is some special reason > for this? > > Thanks and regards, > > Gary (Heyi Guo) > _______________________________________________ > edk2-devel mailing list > [email protected] > https://lists.01.org/mailman/listinfo/edk2-devel _______________________________________________ edk2-devel mailing list [email protected] https://lists.01.org/mailman/listinfo/edk2-devel
