[lwip-devel] Junk in SNMP responses

[Gisle Vanem]

While testing the lwIP-SNMP client or agent (correct term?), using
Net-SNMP's snmpwalk, I see some responses with "junk" like
this (in the lwIP host's ARP table):

  snmpwalk.exe -M mibs -m ALL -v2c -c public 10.0.0.23 
RFC1213-MIB::atPhysAddress
  RFC1213-MIB::atPhysAddress.1.10.0.0.1 = STRING: "╪δù0ëí"
  RFC1213-MIB::atPhysAddress.1.10.0.0.10 = Hex-STRING: E0 3F 49 81 2E EA
  RFC1213-MIB::atPhysAddress.1.10.0.0.21 = Hex-STRING: 94 A1 A2 07 04 BB

and:
  snmpwalk.exe -M mibs -m ALL -v2c -c public 10.0.0.23 
RFC1213-MIB::ipNetToMediaPhysAddress
  RFC1213-MIB::ipNetToMediaPhysAddress.1.10.0.0.1 = STRING: "╪δù0ëí"
  RFC1213-MIB::ipNetToMediaPhysAddress.1.10.0.0.10 = Hex-STRING: E0 3F 49 81 2E 
EA
  RFC1213-MIB::ipNetToMediaPhysAddress.1.10.0.0.21 = Hex-STRING: 94 A1 A2 07 04 
BB

(the lwIP host is at 10.0.0.23).

I do not claim to understand SNMP. Why are there seemingly 2 types
of responses here? Maybe Net-SNMP is to blame here?

The 'E0-3F-49-81-2E-EA' and '94 A1 A2 07 04 BB' are the correct MAC-addresses
of machines connecting to the lwIP web-server. 10.0.0.1 is my default GW.


--
--gv