>What OS is this? Is this your own compilation from the release tar ball >or the versions provided by your distribution?
It is Debian Linux and my own compilation from older 5.8 last year (Tue Feb 26 commit 21260fdd60c172839f997fb6f888a6e21c6825eb) > I do, with the CentOS 7 provided version (5.7.2), and with a somewhat >recent installation of the 5-8-patches branch. Actually I do too :) I was mistaken when I stated that I did not see ipAddressPrefix. So If I want to get "interface name" to "ipv6 address" mapping, I need to get 1. ifIndex = 2 from IP-MIB::ipAddressIfIndex.ipv6."20:01:04:70:df:9a:00:00:00:00:00:00:00:00:00:01" = INTEGER: 2 2. Then get ifName from ifIndex Niels, Thank you for your help, Michael On Thu, Feb 27, 2020 at 1:31 PM Niels Baggesen <ni...@baggesen.net> wrote: > Den 27-02-2020 kl. 18:40 skrev Michael Wu: > > Dear Net-Snmp coders: > > > > I am using net-snmp v5.8 with ipv6 enabled. Trying to get interface's > > ipv6 addresses. I tried a couple of oids but could not figure out how to > > map the ifindex to the ipv6 address assigned to the interfaces. All > > interfaces have both ipv4 and ipv6 addresses assigned. > > What OS is this? Is this your own compilation from the release tar ball > or the versions provided by your distribution? > > 1. The ipv6AddrPrefixTable documented in > > http://www.net-snmp.org/docs/mibs/ipv6MIB.html > > <http://www.net-snmp.org/docs/mibs/ipv6MIB.html> was not available: > > > > snmpwalk -v 2c -c public x.x.x.x .1.3.6.1.2.1.55.1.7 > > IPV6-MIB::ipv6AddrPrefixTable = No Such Object available on this agent > > at this OID > > No, the IPV6-MIB has been deprecated in favor of the augmented IP-MIB > (as used below) > > > 2. ipAddressTable (1.3.6.1.2.1.4.34) has entries of ipv6 prefix: > > > > snmpwalk -v 2c -c public x.x.x.x .1.3.6.1.2.1.4.34 > > IP-MIB::ipAddressIfIndex.ipv4."243.0.3.129" = INTEGER: 230 > > > IP-MIB::ipAddressIfIndex.ipv6."fe:80:00:00:00:00:00:00:02:e0:ec:ff:fe:e1:5e:44" > > > = INTEGER: 230 > > IP-MIB::ipAddressType.ipv4."243.0.3.129" = INTEGER: unicast(1) > > > IP-MIB::ipAddressType.ipv6."fe:80:00:00:00:00:00:00:02:e0:ec:ff:fe:e1:5e:44" > > > = INTEGER: unicast(1) > > ... > > But I don't see ipAddressPrefix ( .1.3.6.1.2.1.4.34.5) from the output. > > I do, with the CentOS 7 provided version (5.7.2), and with a somewhat > recent installation of the 5-8-patches branch. > > IP-MIB::ipAddressPrefix.ipv6."00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:01" > > = OID: > IP-MIB::ipAddressPrefixOrigin.1.ipv6."00:00:00:00:00:00:00:00:00:00:00:00: > 00:00:00:01".128 > IP-MIB::ipAddressPrefix.ipv6."20:01:04:70:df:9a:00:00:00:00:00:00:00:00:00:01" > > = OID: > IP-MIB::ipAddressPrefixOrigin.2.ipv6."20:01:04:70:df:9a:00:00:00:00:00:00: > 00:00:00:00".64 > IP-MIB::ipAddressPrefix.ipv6."fe:80:00:00:00:00:00:00:de:98:3e:20:92:51:bd:11" > > = OID: > IP-MIB::ipAddressPrefixOrigin.2.ipv6."fe:80:00:00:00:00:00:00:00:00:00:00: > 00:00:00:00".64 > > > > 3. Also tried ipAdEntIfIndex ( 1.3.6.1.2.1.4.20.1.2) > > > > snmpwalk -v 2c -c public x.x.x.x 1.3.6.1.2.1.4.20.1.2 > > ... > > IP-MIB::ipAdEntIfIndex.243.0.3.129 = INTEGER: 230 > > ... > > But it only has ipv4 addresses. > > Yes, this is a IPv4 only table. > > > What is the right approach to get the ipv6 address from the interface? > > I would look at > IP-MIB::ipAddressIfIndex.ipv6."00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:01" > > = INTEGER: 1 > IP-MIB::ipAddressIfIndex.ipv6."20:01:04:70:df:9a:00:00:00:00:00:00:00:00:00:01" > > = INTEGER: 2 > > /Niels > > PS: Sorry about the line wrap of these extreme OIDs :-( > > -- > <https://www.e-julemaerket.dk/?f78133c1-061f-4320-b728-d1dbbf6996c7> > > > > _______________________________________________ > Net-snmp-coders mailing list > Net-snmp-coders@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/net-snmp-coders >
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