SNMP traps do not have the expected agent address in the SNMP header on multi-homed systems

Solution In Progress - Updated -


SNMP traps are send from one interface ( but the IP address in the "agent address" field in the SNMP header is from another interface (

# tshark -i eth1 -R "udp.port == 162" -z proto,colinfo,snmp.agent_addr,snmp.agent_addr
Capturing on eth1
2.147745181 ->  86 SNMP    trap iso.  snmp.agent_addr ==


  • Red Hat Enterprise Linux 5

    • net-snmp-5.3
    • net-snmp-libs-5.3
    • net-snmp-libs-5.3
  • Red Hat Enterprise Linux 6

    • net-snmp-5.5
    • net-snmp-utils-5.5
    • net-snmp-libs-5.5
  • Red Hat Enterprise Linux 7

    • net-snmp-5.7
    • net-snmp-libs-5.7
    • net-snmp-agent-libs-5.7

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