It's hard to say without seeing your code, but a common source of problems like this is using functions that are meant for nul-terminated strings (e.g., strncpy() ) instead of those meant for moving bytes around (e.g., memcpy() ).
Bill On Fri, Jan 15, 2021 at 10:06 AM dga via Net-snmp-coders < net-snmp-coders@lists.sourceforge.net> wrote: > Hello, > > I would like to add more details to clarify the problem. > > The 6 fields of mac address are returned to the agent under a string of > 6 chars: (let's say mac[6]) > > So for the following mac address : "00:48:65:6C:6C:6F" : > > "00" => "NULL" = mac[0] > > "48" => "H" = mac[1] > > "65" => "e" = mac[2] > > "6C" => "l" = mac[3] > > "6C" => "l" = mac[4] > > "6F" => "o" = mac[5] > > it means we have : mac[6] = { '\0', 'H', 'e', 'l', 'l', 'o' , '\0'} > > This string (mac[6]) is returned with an other parameter (size_t * > var_len) to giving the size of the string. Here the size is 6 of course. > > But, when I get the corresponding oid value I get : "Hex-STRING: 00 00 > 00 00 00 00" > > It seems to be a bug ... > > Best Regards, > > Damien GARCIA > > > Le 11/01/2021 à 20:27, dga a écrit : > > Hello, > > > > I have written an snmp module to include additional interfaces in the > > mib2 interface. However I face an issue with the field "ifPhysAddress" > > (mac address) if the mac address of the interface starts by "00" > > (example: "00:06:91:C6:B1:3F"). In that case I get "Hex-STRING: 00 00 > > 00 00 00 00" instead of getting "Hex-STRING: 00 06 91 C6 B1 3F" . Is > > it a bug ? > > > > I have no issue with my module if the mac address that does NOT start > > by "00". > > > > There is also no issue get mac address starting by "00" for the > > default interfaces of the snmp demon. > > > > > > May be someone has ever face the same issue ? Any help would be > > greatly appreciated ! > > > > > > Best Regards, > > > > Damien GARCIA > > > > > > > _______________________________________________ > Net-snmp-coders mailing list > Net-snmp-coders@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/net-snmp-coders >
_______________________________________________ Net-snmp-coders mailing list Net-snmp-coders@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/net-snmp-coders