problem with snmptrapd and v3 traps

[David S. A. <da...@av...>]

I am having trouble getting snmptrapd to log v3 traps.

In /var/ucd-snmp/snmptrapd.conf I added the line:
createUser myuser MD5 my_password DES

snmptrapd is started as follows:

/usr/sbin/snmptrapd -f -P -Dusm -d
usmUser: created a new user myuser at 80 00 07 E5 80 4F 16 49 7C 3A 7D
04 3B 
2001-05-17 20:10:03 UCD-snmp version 4.2.1 Started.

Running a test with snmptrap:
snmptrap -v 3 -u myuser -l authNoPriv -a MD5 -A my_password localhost

produces the following output from snmptrapd

Received 152 bytes from 127.0.0.1:1044
0000: 30 81 95 02  01 03 30 10  02 04 50 8E  43 82 02 02   
0.....0...P.C...
0016: 05 C0 04 01  01 02 01 03  04 32 30 30  04 0D 80 00   
.........200....
0032: 07 E5 80 BB  9B BB 7F 3A  87 04 3B 02  01 01 02 04   
.......:..;.....
0048: 02 50 5A 58  04 06 6D 79  75 73 65 72  04 0C 0D DB   
.PZX..myuser....
0064: 4C E7 B4 4A  EB BB 02 92  F7 99 04 00  30 4A 04 0D   
L..J........0J..
0080: 80 00 07 E5  80 BB 9B BB  7F 3A 87 04  3B 04 00 A7   
.........:..;...
0096: 37 02 04 55  32 01 53 02  01 00 02 01  00 30 29 30   
7..U2.S......0)0
0112: 0E 06 08 2B  06 01 02 01  01 03 00 43  02 02 9A 30   
...+.......C...0
0128: 17 06 0A 2B  06 01 06 03  01 01 04 01  00 06 09 2B   
...+...........+
0144: 06 01 04 01  B5 69 00 01                              .....i..

usm: USM processing begun...
usm: getting user myuser
usm: Unknown User(myuser)

and the trap is not logged to stdout (used the -P flag on snmptrapd).

Any ideas on what I'm missing? 

david