Apologies; I included the wrong kea.conf file. Please use the one attached to this message instead.
Thanks - Fred > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Templin, Fred L > Sent: Thursday, April 21, 2016 3:19 PM > To: [email protected]; [email protected] > Cc: Benson, Michael W <[email protected]> > Subject: [Kea-users] kea-dhcp6 ignoring DHCPv6 messages received on a tuntap > interface > > Hello, > > We are using kea-dhcp6 version 1.0.0 over a tuntap interface in tun mode. We > are sending DHCPv6 Solicit messages from a client to the kea server that is > supposed to be listening on tun0 (see attached kea.conf). When we run > "tcpdump -lnnXi tun0" on the kea server, we see what appear to be good > DHCPv6 Solicits wrapped in relay-fwd wrappers. The client is sending the > Solicits once per second, but the kea server never gives any indication that > it has received any of the messages even when run in debug mode. > > Here is what the relay-fwd wrapped DHCPv6 Solicit message looks like taken > from tcpdump on the kea server's tun0 interface: > > 14:59:37.334546 IP6 fe80::ffff:ffff:ffff:ffff.546 > ff02::1:2.547: dhcp6 > relay-fwd > 0x0000: 6000 0000 008e 11ff fe80 0000 0000 0000 `............... > 0x0010: ffff ffff ffff ffff ff02 0000 0000 0000 ................ > 0x0020: 0000 0000 0001 0002 0222 0223 008e c44e .........".#...N > 0x0030: 0c00 0000 0000 0000 0000 0000 0000 0000 ................ > 0x0040: 0000 fe80 0000 0000 0000 ffff ffff ffff ................ > 0x0050: ffff 0012 0004 0000 b0e2 0042 0020 0011 ...........B.... > 0x0060: 001c 0000 b0e2 0001 0014 00ff aa04 0000 ................ > 0x0070: 0000 0000 0000 0000 ffff 0000 0000 0009 ................ > 0x0080: 0034 0185 2f37 0001 000a 0002 0000 b0e2 .4../7.......... > 0x0090: 0000 0000 0006 0004 0017 0018 0008 0002 ................ > 0x00a0: 0000 0019 000c 0000 b0e2 0000 0000 0000 ................ > 0x00b0: 0000 000e 0000 ...... > > and, here is the result of "ifconfig tun0" on the kea server: > > tun0 Link encap:UNSPEC HWaddr > 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 > inet addr:10.8.0.1 P-t-P:10.8.0.1 Mask:255.255.255.0 > inet6 addr: fe80::2/64 Scope:Link > UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1 > RX packets:746 errors:0 dropped:0 overruns:0 frame:0 > TX packets:12 errors:0 dropped:0 overruns:0 carrier:0 > collisions:0 txqueuelen:100 > RX bytes:135370 (135.3 KB) TX bytes:912 (912.0 B) > > Note that we have successfully used kea-dhcp6 over tuntap interfaces in > tun mode in other application contexts. Could it be that there is some kind > of tuntap configuration difference that is causing kea to ignore our messages? > > Any ideas on how to debug this? > > Thanks - Fred > [email protected]
kea.conf
Description: kea.conf
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