value #2 has unknow type [81]???

[krelac]

#snmpget -c public -v 2c x.x.x.x 1.3.6.1.4.1.1916.1.1.1.22.0
EXTREME-SYSTEM-MIB::extremePowerAlarm.0 = INTEGER: false(2)

#snmpget -c public -v 2c x.x.x.x extremePowerAlarm.0
EXTREME-SYSTEM-MIB::extremePowerAlarm.0 = INTEGER: false(2)

#tail /tmp/zabbix_server.log
002141:20061113:155929 OID [1.3.6.1.2.1.2.2.1.2.1023] value #2 has unknow type [81]
002141:20061113:155929 OID [1.3.6.1.2.1.2.2.1.10.1022] value #2 has unknow type [81]
002141:20061113:155929 OID [1.3.6.1.2.1.2.2.1.16.1026] value #2 has unknow type [81]
002141:20061113:155929 OID [1.3.6.1.2.1.2.2.1.2.1024] value #2 has unknow type [81]
002141:20061113:155929 OID [1.3.6.1.2.1.2.2.1.10.1023] value #2 has unknow type [81]
002141:20061113:155929 OID [1.3.6.1.2.1.2.2.1.16.1021] value #2 has unknow type [81]
002141:20061113:155929 OID [1.3.6.1.2.1.2.2.1.16.1027] value #2 has unknow type [81]
002141:20061113:155929 OID [1.3.6.1.2.1.2.2.1.2.1025] value #2 has unknow type [81]
002141:20061113:155929 OID [1.3.6.1.2.1.2.2.1.10.1024] value #2 has unknow type [81]
002141:20061113:155929 OID [1.3.6.1.2.1.2.2.1.16.1022] value #2 has unknow type [81]


I can do snmpwalk, snmptranslate, etc..

any idey?

tnx
krelac