FreeBSD STABLE_10 (10.3) - lots of IPv6 connections in CLOSED state
Robert Blayzor
rblayzor.bulk at inoc.net
Fri May 6 00:40:15 UTC 2016
Started seeing a ton of these in dmesg:
sonewconn: pcb 0xfffff8001570f188: Listen queue overflow: 301 already in queue awaiting acceptance (41 occurrences)
sonewconn: pcb 0xfffff8001570f188: Listen queue overflow: 301 already in queue awaiting acceptance (45 occurrences)
sonewconn: pcb 0xfffff8001570f188: Listen queue overflow: 301 already in queue awaiting acceptance (41 occurrences)
sonewconn: pcb 0xfffff8001570f188: Listen queue overflow: 301 already in queue awaiting acceptance (39 occurrences)
sonewconn: pcb 0xfffff8001570f188: Listen queue overflow: 301 already in queue awaiting acceptance (42 occurrences)
sonewconn: pcb 0xfffff8001570f188: Listen queue overflow: 301 already in queue awaiting acceptance (40 occurrences)
sonewconn: pcb 0xfffff8001570f188: Listen queue overflow: 301 already in queue awaiting acceptance (44 occurrences)
sonewconn: pcb 0xfffff8001570f188: Listen queue overflow: 301 already in queue awaiting acceptance (43 occurrences)
sonewconn: pcb 0xfffff8001570f188: Listen queue overflow: 301 already in queue awaiting acceptance (38 occurrences)
The process normally listening, the service stopped working. (manage-sieve, TCP port 4190)…
After looking at netstat I see 300+ connections on this service in a “CLOSED” state… All of the connections are via IPv6.
Sockstat shows all of these connections not related to a user, command, pid, etc…. If I restart the process, all of the connections are freed and things work as expected for a while.
sockstat
USER COMMAND PID FD PROTO LOCAL ADDRESS FOREIGN ADDRESS
? ? ? ? tcp6 dead:beef:110:2::1:0:25 dead:beef:110:2::f:0:24162
? ? ? ? tcp6 dead:beef:110:2::1:0:110 dead:beef:110:2::f:0:1566
? ? ? ? tcp6 dead:beef:110:2::1:0:25 dead:beef:110:2::f:1:30064
? ? ? ? tcp6 dead:beef:110:2::1:0:143 dead:beef:110:2::f:0:7199
? ? ? ? tcp6 dead:beef:110:2::1:0:110 dead:beef:110:2::f:1:48062
? ? ? ? tcp6 dead:beef:110:2::1:0:143 dead:beef:110:2::f:1:54271
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:36446
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:57291
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:48429
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:56473
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:61870
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:5971
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:64942
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:46824
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:14230
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:34070
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:24494
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:43982
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:38576
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:13346
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:46491
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:57936
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:3863
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:52049
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:45212
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:43416
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:56373
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:51448
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:51996
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:52523
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:19061
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:41591
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:52222
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:47299
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:18115
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:64664
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:31583
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:24094
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:45457
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:51491
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:47910
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:26928
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:45476
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:63046
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:58335
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:18465
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:4543
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:49344
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:44587
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:50919
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:6113
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:37735
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:16079
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:6577
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:14321
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:18007
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:59905
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:43224
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:38200
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:46691
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:4639
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:25019
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:29059
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:27098
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:18482
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:48661
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:43056
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:45675
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:13694
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:65270
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:24727
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:33191
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:65497
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:61110
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:25091
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:24267
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:2629
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:27831
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:18562
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:46241
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:9761
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:10111
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:48462
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:3343
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:61423
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:57491
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:45411
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:51383
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:26383
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:21739
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:4026
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:23671
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:53683
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:46756
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:30714
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:44122
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:4850
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:32784
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:8775
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:38583
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:5123
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:1475
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:11930
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:22326
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:16479
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:40217
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:44723
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:58170
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:56677
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:61037
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:21891
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:14223
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:48263
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:6851
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:47644
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:36237
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:11922
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:1:36168
? ? ? ? tcp6 dead:beef:110:2::1:0:4190 dead:beef:110:2::f:0:57985
--
Robert
inoc.net!rblayzor
XMPP: rblayzor.AT.inoc.net
PGP Key: 78BEDCE1 @ pgp.mit.edu
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