I am migrating VLANs over from ISC to KEA DHCP6. Another "many requests
from one client" issue just cropped up -- one client is hitting the
server once a second asking to renew a PD_LEASE - here are 3 lines of
several thousand):
2020-04-20 00:15:01.796 INFO [kea-dhcp6.leases/8350]
DHCP6_PD_LEASE_RENEW duid=[00:03:00:01:c4:b3:01:da:4e:2e], tid=0xef6d87:
lease for prefix 2607:f598:b980:347:0:a:0:1/128 and iaid=31084078 has
been allocated
2020-04-20 00:15:02.750 INFO [kea-dhcp6.leases/8350]
DHCP6_PD_LEASE_RENEW duid=[00:03:00:01:c4:b3:01:da:4e:2e], tid=0x3b3b7a:
lease for prefix 2607:f598:b980:347:0:a:0:1/128 and iaid=31084078 has
been allocated
2020-04-20 00:15:03.821 INFO [kea-dhcp6.leases/8350]
DHCP6_PD_LEASE_RENEW duid=[00:03:00:01:c4:b3:01:da:4e:2e], tid=0xa7d77e:
lease for prefix 2607:f598:b980:347:0:a:0:1/128 and iaid=31084078 has
been allocated
Other clients on that vlan getting /60 -PD requests, but that log line
looks like a /128 -PD request. Am I reading the log line correct?
(this looks like an real old Apple Airport Extreme router on the client
side...).
Thanks in advance,
Rudy
On 4/18/20 6:52 PM, Rudy R. wrote:
Hi Kea users,
I am switching from ISC to KEA and am seeing something an -PD request
-- odd in that is coming in at about 20,000 times per minute.
I'm getting a lot of these in my log file:
2020-04-18 18:41:12.268 INFO [kea-dhcp6.leases/8350]
DHCP6_PD_LEASE_ADVERT duid=[00:03:00:01:14:cc:20:37:d2:6f],
tid=0x977984: lease for prefix 2607:f598:b6da:170::/60 and iaid=1 will
be advertised
2020-04-18 18:41:12.268 INFO [kea-dhcp6.leases/8350]
DHCP6_LEASE_ADVERT duid=[00:03:00:01:14:cc:20:37:d2:6f], tid=0x2b73d3:
lease for address 2607:f598:b6d0:228:0:a:0:17 and iaid=0 will be
advertised
2020-04-18 18:41:12.268 INFO [kea-dhcp6.leases/8350]
DHCP6_PD_LEASE_ADVERT duid=[00:03:00:01:14:cc:20:37:d2:6f],
tid=0x2b73d3: lease for prefix 2607:f598:b6da:170::/60 and iaid=1 will
be advertised
2020-04-18 18:41:12.269 INFO [kea-dhcp6.leases/8350]
DHCP6_LEASE_ADVERT duid=[00:03:00:01:14:cc:20:37:d2:6f], tid=0x3d003e:
lease for address 2607:f598:b6d0:228:0:a:0:17 and iaid=0 will be
advertised
2020-04-18 18:41:12.269 INFO [kea-dhcp6.leases/8350]
DHCP6_PD_LEASE_ADVERT duid=[00:03:00:01:14:cc:20:37:d2:6f],
tid=0x3d003e: lease for prefix 2607:f598:b6da:170::/60 and iaid=1 will
be advertised
2020-04-18 18:41:12.270 INFO [kea-dhcp6.leases/8350]
DHCP6_LEASE_ADVERT duid=[00:03:00:01:14:cc:20:37:d2:6f], tid=0xe5854e:
lease for address 2607:f598:b6d0:228:0:a:0:17 and iaid=0 will be
advertised
2020-04-18 18:41:12.271 INFO [kea-dhcp6.leases/8350]
DHCP6_PD_LEASE_ADVERT duid=[00:03:00:01:14:cc:20:37:d2:6f],
tid=0xe5854e: lease for prefix 2607:f598:b6da:170::/60 and iaid=1 will
be advertised
2020-04-18 18:41:12.271 INFO [kea-dhcp6.leases/8350]
DHCP6_LEASE_ADVERT duid=[00:03:00:01:14:cc:20:37:d2:6f], tid=0x2f3f52:
lease for address 2607:f598:b6d0:228:0:a:0:17 and iaid=0 will be
advertised
2020-04-18 18:41:12.271 INFO [kea-dhcp6.leases/8350]
DHCP6_PD_LEASE_ADVERT duid=[00:03:00:01:14:cc:20:37:d2:6f],
tid=0x2f3f52: lease for prefix 2607:f598:b6da:170::/60 and iaid=1 will
be advertised
2020-04-18 18:41:12.273 INFO [kea-dhcp6.leases/8350]
DHCP6_LEASE_ADVERT duid=[00:03:00:01:14:cc:20:37:d2:6f], tid=0x617615:
lease for address 2607:f598:b6d0:228:0:a:0:17 and iaid=0 will be
advertised
2020-04-18 18:41:12.274 INFO [kea-dhcp6.leases/8350]
DHCP6_PD_LEASE_ADVERT duid=[00:03:00:01:14:cc:20:37:d2:6f],
tid=0x617615: lease for prefix 2607:f598:b6da:170::/60 and iaid=1 will
be advertised
2020-04-18 18:41:12.275 INFO [kea-dhcp6.leases/8350]
DHCP6_LEASE_ADVERT duid=[00:03:00:01:14:cc:20:37:d2:6f], tid=0x41364b:
lease for address 2607:f598:b6d0:228:0:a:0:17 and iaid=0 will be
advertised
2020-04-18 18:41:12.275 INFO [kea-dhcp6.leases/8350]
DHCP6_PD_LEASE_ADVERT duid=[00:03:00:01:14:cc:20:37:d2:6f],
tid=0x41364b: lease for prefix 2607:f598:b6da:170::/60 and iaid=1 will
be advertised
2020-04-18 18:41:12.276 INFO [kea-dhcp6.leases/8350]
DHCP6_LEASE_ADVERT duid=[00:03:00:01:14:cc:20:37:d2:6f], tid=0xb8f29b:
lease for address 2607:f598:b6d0:228:0:a:0:17 and iaid=0 will be
advertised
2020-04-18 18:41:12.276 INFO [kea-dhcp6.leases/8350]
DHCP6_PD_LEASE_ADVERT duid=[00:03:00:01:14:cc:20:37:d2:6f],
tid=0xb8f29b: lease for prefix 2607:f598:b6da:170::/60 and iaid=1 will
be advertised
Here is my config:
{
"subnet": "2607:F598:B6d0:228::/64",
"pools": [ { "pool": "2607:F598:B6d0:228::a:0:0/96" } ],
"pd-pools":
[
{ "prefix": "2607:F598:B6da::", "prefix-len": 48, "delegated-len":
60 },
{ "prefix": "2607:F598:B6db::", "prefix-len": 48, "delegated-len":
64 },
{ "prefix": "2607:F598:B6dc::", "prefix-len": 48, "delegated-len":
56 }
]
},
Looks like a TP-LINK router...
Is (root@kea) 162> kea-show-leases6.sh
IPAddr HWAddr Lease
Start Renew Expire Hostname State
[...snip...]
2607:f598:b6d0:228:0:a:0:17/128 14:cc:20:37:d2:6f 4000
20200418T183840 20200418T191200 20200418T194520 . 0
2607:f598:b6d0:228:0:a:0:17/128 14:cc:20:37:d2:6f 4000
20200418T183840 20200418T191200 20200418T194520 . 0
2607:f598:b6d0:228:0:a:0:17/128 14:cc:20:37:d2:6f 4000
20200418T183837 20200418T191157 20200418T194517 . 0
2607:f598:b6d0:228:0:a:0:17/128 14:cc:20:37:d2:6f 4000
20200418T183837 20200418T191157 20200418T194517 . 0
2607:f598:b6d0:228:0:a:0:17/128 14:cc:20:37:d2:6f 4000
20200418T183837 20200418T191157 20200418T194517 . 0
2607:f598:b6d0:228:0:a:0:17/128 14:cc:20:37:d2:6f 4000
20200418T183836 20200418T191156 20200418T194516 . 0
2607:f598:b6d0:228:0:a:0:17/128 14:cc:20:37:d2:6f 4000
20200418T183835 20200418T191155 20200418T194515 . 0
2607:f598:b6d0:228:0:a:0:17/128 14:cc:20:37:d2:6f 4000
20200418T183831 20200418T191151 20200418T194511 . 0
2607:f598:b6d0:228:0:a:0:17/128 14:cc:20:37:d2:6f 4000
20200418T183831 20200418T191151 20200418T194511 . 0
2607:f598:b6d0:228:0:a:0:17/128 14:cc:20:37:d2:6f 4000
20200418T183828 20200418T191148 20200418T194508 . 0
2607:f598:b6d0:228:0:a:0:17/128 14:cc:20:37:d2:6f 4000
20200418T183827 20200418T191147 20200418T194507 . 0
2607:f598:b6d0:228:0:a:0:17/128 14:cc:20:37:d2:6f 4000
20200418T183825 20200418T191145 20200418T194505 . 0
2607:f598:b6d0:228:0:a:0:17/128 14:cc:20:37:d2:6f 4000
20200418T183824 20200418T191144 20200418T194504 . 0
2607:f598:b6d0:228:0:a:0:17/128 14:cc:20:37:d2:6f 4000
20200418T183824 20200418T191144 20200418T194504 . 0
2607:f598:b6d0:228:0:a:0:17/128 14:cc:20:37:d2:6f 4000
20200418T183824 20200418T191144 20200418T194504 . 0
2607:f598:b6d0:228:0:a:0:17/128 14:cc:20:37:d2:6f 4000
20200418T183823 20200418T191143 20200418T194503 . 0
Can I limit a client to 1 request per 10 seconds or something like that?
Rudy
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