RE: Please advise about snmpget over IPv6

> (Now my linux use net-snmp version 5.1.2).

  That's an old version.  My experience is exclusively with net-snmp v5.4.1 and v5.5.

> The following is my command to use snmpget over IPv6:
snmpget -v 2c -c testcommu UDP6:'[FE80::21A:A2FF:FEFE:B0C0]' sysDescr.0
the result: Timeout: No Response from UDP6:[FE80::21A:A2FF:FEFE:B0C0].

  The following command (using net-snmp tools v5.5) allows me to query net-snmp agents (v5.5) to walk the MIB (using SNMPv3 and IPv6):

snmpwalk -v 3 -n "" -u auser -l authNoPriv -a MD5 -A password udp6:[2003:a8::208] system

SNMPv2-MIB::sysDescr.0 = STRING: Linux cep 2.6.21.7 #1 SMP PREEMPT Tue Aug 17 20:43:05 EDT 2010 mips

  However, the same host times out when I try to switch to SNMPv2c:

snmpwalk -v 2c -c public udp6:[2003:a8::208] system

Timeout: No Response from udp6:[2003:a8::208]

  That seems strange to me.

  First thing I would change in your snmpget command is to remove the single quotes.

  Ron



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