Hello swalker,   Could you provide the results of running the snmpwalk command using the "-On" modifier to fully render the OID.   snmpwalk -On -m ALL -M /usr/share/snmp/mibs/dell -v 2c -c "ourSNMPcommunity" hostnameOfSwitch IPV6-MIB::ipv6NetToMediaPhysAddress
Hello, I am trying to log the association between host IPv6 and MAC addresses using SNMP queries on two Dell N4032F L3 switches running the most recent 6.5.4.20 firmware. When performing an snmpwalk from a Linux workstation (using either SNMP v2c or v3), I get the following results when querying IPV6-MIB::ipv6NetToMediaPhysAddress as an example: When querying IPV6-MIB::ipv6NetToMediaNetAddress, I get "No Such Object available on this agent at this OID". Using the IPv4 equivalents (which are exactly the same but with the "V6" and "v6" removed), I get valid results for IPv4. Before the  = STRING, the system should be returning IPv6 addresses,  but instead, it returns the garbled mess seen above, with each line showing the "................" (always 16 characters, mostly periods but other characters are sometimes shown). I have done snmpwalk on the entire OID tree of the switch, and confirmed that no other OIDs available that give the IP addresses of neighbors, even after installing the Dell-specific MIB files. When connecting to the switch and running show ipv6 neighbors, I have plenty of valid entries that should be showing up. Is there some reason that the switches are not providing valid addresses that any of you could think of? Thanks in advance for any advice!
Dell N4032F: switch providing garbled IPv6 addresses via SNMP when querying 
IPV6-MIB::ipv6