Public bug reported:
snmpd reports wrong interface speed when it is run as the snmp user.
Running snmpd as root gives the correct result. Debug output suggests a
permission problem. The gigabit network interface speed is correctly
determined at startup, but fails when the owner of the process switches
from root to the snmp user (or so I assume). After failure snmpwalk
reports a speed of 10 Mbit/s for all interfaces.
Using snmp user:
# snmpd -f -Le -Lf /dev/null -u snmp -I -smux -p /var/run/snmpd.pid
-DmibII/interfaces
registered debug token mibII/interfaces, 1
netsnmp_assert !"registration != duplicate" failed agent_registry.c:535
netsnmp_subtree_load()
netsnmp_assert !"registration != duplicate" failed agent_registry.c:535
netsnmp_subtree_load()
netsnmp_assert !"registration != duplicate" failed agent_registry.c:535
netsnmp_subtree_load()
mibII/interfaces: ETHTOOL_GSET on eth0 speed = 1000
mibII/interfaces: ETHTOOL_GSET on eth0 speed = 1000
NET-SNMP version 5.4.1.2
mibII/interfaces: ETHTOOL_GSET on eth0 failed
mibII/interfaces: SIOCGMIIPHY on eth0 failed
Using root user:
# snmpd -f -Le -Lf /dev/null -I -smux -p /var/run/snmpd.pid -DmibII/interfaces
registered debug token mibII/interfaces, 1
netsnmp_assert !"registration != duplicate" failed agent_registry.c:535
netsnmp_subtree_load()
netsnmp_assert !"registration != duplicate" failed agent_registry.c:535
netsnmp_subtree_load()
netsnmp_assert !"registration != duplicate" failed agent_registry.c:535
netsnmp_subtree_load()
mibII/interfaces: ETHTOOL_GSET on eth0 speed = 1000
mibII/interfaces: ETHTOOL_GSET on eth0 speed = 1000
NET-SNMP version 5.4.1.2
mibII/interfaces: ETHTOOL_GSET on eth0 speed = 1000
Note: The output is from version 5.4.1.2 which I packaged for testing
purposes, but the problem is the same with version 5.4.1.
** Affects: net-snmp (Ubuntu)
Importance: Undecided
Status: New
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Wrong interface speed from snmpd running as snmp user
https://bugs.launchpad.net/bugs/250549
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