[freebsd 11.2] net-snmpd incomplete mac addresses

[Eugene Grosbein]

05.10.2018 18:33, Patrick Lamaiziere wrote:
> Hello,
> 
> freebsd 11.2/amd64 release
> net-snmp-5.7.3_18
> 
> net-snmpd returns incomplete MAC addresses in IF-MIB::ifPhysAddress,
> the first octet is always "0".
> 
> $ snmpwalk -v 2c -c "xxx" localhost 1.3.6.1.2.1.2.2.1.6
> IF-MIB::ifPhysAddress.1 = STRING: 0:36:9f:93:7d:f8
> IF-MIB::ifPhysAddress.2 = STRING: 0:36:9f:93:7d:fa
> IF-MIB::ifPhysAddress.3 = STRING: 0:f4:bb:ef:c8:e4
> ...
> 
> $ ifconfig | grep ether
> 	ether a0:36:9f:93:7d:f8
> 	ether a0:36:9f:93:7d:fa
> 	ether ec:f4:bb:ef:c8:e4
> 
> tcpdump confirms that the problem is in net-snmpd (and not the client).
> 
> Also when using the MIB IP-MIB::ipNetToMediaPhysAddress the MAC
> addresses are correct. 
> 
> $ snmpwalk -v2c -c '***r***' localhost IP-MIB::ipNetToMediaPhysAddress | grep a0:36:9f:93:7d:f8
> IP-MIB::ipNetToMediaPhysAddress.13.10.10.1.118 = STRING: a0:36:9f:93:7d:f8
> 
> I've checked net-snmpd 5.7.3 under linux and the mac addresses are
> correct. (So it's specific to FreeBSD.)
> 
> Any clue ?

We have bsnmpd in the base system. Does it exhibit same problem?