[Pdns-users] Weird messages on log

Tue Mar 8 13:20:57 UTC 2011



We are facing a new problem on PDN Recursor 3.3 on Debian Lenny Kernel 2.6.32 
Out of a sudden PDNS stops responding for a while and after like 2 minutes or more it starts working normally taking into consideration the following:
1- we didn't stop/start PDNS service2- Internet connection is available3- Memory space free enough4- Cache Stats:
Mar  8 14:37:12 xDns pdns_recursor[8554]: stats: 71115 outgoing tcp connections, 15 queries running, 4722911 outgoing timeouts
Mar  8 14:37:12 xDns pdns_recursor[8554]: stats: 500037 packet cache entries, 58% packet cache hits
Mar  8 14:37:12 xDns pdns_recursor[8554]: stats: 156 qps (average over 1806 seconds)
Mar  8 15:07:14 xDns pdns_recursor[8554]: stats: 320887085 questions, 1000272 cache entries, 89770 negative entries, 13% cache hits
Mar  8 15:07:14 xDns pdns_recursor[8554]: stats: throttle map: 563, ns speeds: 7382
Mar  8 15:07:14 xDns pdns_recursor[8554]: stats: outpacket/query ratio 47%, 2% throttled, 0 no-delegation drops
Mar  8 15:07:14 xDns pdns_recursor[8554]: stats: 71171 outgoing tcp connections, 17 queries running, 4794316 outgoing timeouts
Mar  8 15:07:14 xDns pdns_recursor[8554]: stats: 500224 packet cache entries, 58% packet cache hits
Mar  8 15:07:14 xDns pdns_recursor[8554]: stats: 222 qps (average over 1802 seconds)
5- messages on the log are: [60745.044977] UDP: bad checksum. From 152.10.1.28:62503 to 109.75.64.130:32794 ulen 21[60912.562838] UDP: short packet: From 0.0.0.0:32764 32778/42 to 32.0.0.0:32525[60925.577370] UDP: bad checksum. From 152.10.1.28:53375 to 109.75.64.130:32794 ulen 21[63307.155085] UDP: bad checksum. From 152.10.1.28:58399 to 109.75.64.130:32794 ulen 21[64568.726921] UDP: short packet: From 0.0.0.0:32584 32921/51 to 32.0.0.0:32794[64574.740961] UDP: bad checksum. From 152.10.1.28:64615 to 109.75.64.130:32794 ulen 21[64769.902073] UDP: short packet: From 0.0.0.0:50303 32793/51 to 0.0.0.0:32794[144672.565142] UDP: short packet: From 0.0.0.0:65052 32921/51 to 0.0.0.0:32794[151836.182807] UDP: short packet: From 0.0.0.0:32546 146/36 to 32.0.0.0:32794[151902.344807] UDP: short packet: From 0.0.0.0:62015 32919/47 to 32.0.0.0:32794[199699.672546] usb 2-1: USB disconnect, address 3[223674.528592] UDP: short packet: From 0.0.0.0:0 0/47 to 32.0.0.0:1[565665.278685] UDP: short packet: From 0.0.0.0:61327 3991/44 to 0.0.0.0:53[594450.347789] UDP: short packet: From 0.0.0.0:2818 13568/48 to 0.0.0.0:0[1081508.560610] UDP: short packet: From 0.0.0.0:4386 230/50 to 32.0.0.0:53[1458214.788313] UDP: bad checksum. From 109.75.64.48:58611 to 109.75.64.130:61493 ulen 63[1458252.158525] UDP: bad checksum. From 109.75.64.48:55482 to 109.75.64.130:149 ulen 46[1458252.512870] UDP: short packet: From 0.0.0.0:3649 148/52 to 32.0.0.0:53[1458257.308717] UDP: bad checksum. From 109.75.64.48:42175 to 109.75.64.130:61491 ulen 47[1458259.318522] UDP: short packet: From 0.0.0.0:60374 24636/60 to 32.0.0.0:53[1458267.567859] UDP: short packet: >From 0.0.0.0:36310 61487/47 to 32.0.0.0:59[1458268.627701] UDP: bad checksum. From 109.75.64.48:3403 to 109.75.64.2:1589 ulen 46[1458268.859090] UDP: short packet: From 0.0.0.0:45909 61488/48 to 32.0.0.0:165[1458268.859098] UDP: short packet: From 0.0.0.0:36830 204/44 to 32.0.0.0:53[1458274.484931] UDP: short packet: From 0.0.0.0:39098 24623/47 to 32.0.0.0:53[1458511.114535] UDP: short packet: From 0.0.0.0:57242 24623/47 to 32.0.0.0:53[1458512.449695] UDP: bad checksum. From 109.75.64.47:56023 to 109.75.64.2:61497 ulen 47[1459025.745750] UDP: short packet: From 0.0.0.0:41150 3887/47 to 32.0.0.0:53[1459050.126692] UDP: short packet: From 0.0.0.0:1739 3624/40 to 32.0.0.0:53[1461888.764031] UDP: short packet: From 0.0.0.0:50725 3901/61 to 32.0.0.0:53[1461906.326245] UDP: short packet: From 0.0.0.0:56903 95/47 to 32.0.0.0:53[1461932.973787] UDP: bad checksum. From 109.75.64.47:63478 to 109.75.64.2:32821 ulen 46[1462106.647169] UDP: bad checksum. From 109.75.64.48:58299 to 109.75.64.130:48 ulen 45[1462110.419317] UDP: bad checksum. From 109.75.64.48:45889 to 109.75.64.130:51 ulen 50[1462117.181938] UDP: bad checksum. From 109.75.64.48:48489 to 109.75.64.130:133 ulen 47[1462117.191362] UDP: short packet: From 0.0.0.0:53921 58/49 to 32.0.0.0:53[1462150.670223] UDP: bad checksum. From 109.75.64.48:35480 to 109.75.64.2:4 ulen 52[1462172.964580] UDP: bad checksum. From 109.75.64.47:5284 to 109.75.64.2:41013 ulen 49[1462176.541779] UDP: short packet: From 0.0.0.0:35590 218/42 to 32.0.0.0:53[1462223.737015] UDP: bad checksum. From 109.75.64.47:33321 to 109.75.64.2:3637 ulen 47[1462286.477024] UDP: bad checksum. From 109.75.64.47:5519 to 109.75.64.2:3893 ulen 42[1462312.956081] UDP: short packet: From 0.0.0.0:2050 61520/55 to 32.0.0.0:53[1462343.475164] UDP: short packet: From 0.0.0.0:43028 0/47 to 32.0.0.0:53[1462717.042091] UDP: bad checksum. From 109.75.64.47:60511 to 109.75.64.2:52 ulen 40[1462717.977027] UDP: bad checksum. From 109.75.64.47:5300 to 109.75.64.2:28565 ulen 57[1462730.047234] UDP: bad checksum. From 109.75.64.47:2236 to 109.75.64.2:32821 ulen 39[1462748.996822] UDP: bad checksum. From 109.75.64.47:50777 to 109.75.64.2:51 ulen 64[1462768.737577] UDP: short packet: From 0.0.0.0:56964 24620/44 to 32.0.0.0:53[1462833.780777] UDP: bad checksum. From 109.75.64.48:53300 to 109.75.64.2:37 ulen 50[1462845.981231] UDP: short packet: From 0.0.0.0:59553 63/61 to 32.0.0.0:53[1462848.918487] UDP: bad checksum. From 109.75.64.48:58727 to 109.75.64.130:61 ulen 43[1462863.402415] UDP: short packet: From 0.0.0.0:60272 61487/47 to 32.0.0.0:53[1462865.044346] UDP: short packet: From 0.0.0.0:54519 43/39 to 32.0.0.0:53[1462865.072152] UDP: bad checksum. From 109.75.64.48:55189 to 109.75.64.130:3893 ulen 40[1462903.292186] UDP: short packet: >From 0.0.0.0:10687 154/42 to 32.0.0.0:53[1462924.984634] UDP: bad checksum. From 109.75.64.47:33325 to 109.75.64.2:165 ulen 45[1462943.757452] UDP: bad checksum. From 109.75.64.47:1680 to 109.75.64.2:57 ulen 47[1462943.780562] UDP: bad checksum. From 109.75.64.47:42569 to 109.75.64.2:4 ulen 38[1462946.066290] UDP: bad checksum. From 109.75.64.48:34142 to 109.75.64.130:1589 ulen 38[1462952.029455] UDP: bad checksum. From 109.75.64.47:10727 to 109.75.64.2:16 ulen 46[1462965.130550] UDP: short packet: From 0.0.0.0:25179 138/42 to 32.0.0.0:53[1462968.398187] UDP: bad checksum. From 109.75.64.47:34912 to 109.75.64.2:149 ulen 43[1462975.517694] UDP: bad checksum. From 109.75.64.48:41796 to 109.75.64.130:48 ulen 46[1462977.060630] UDP: bad checksum. From 109.75.64.47:60790 to 109.75.64.2:3893 ulen 42[1462977.551510] UDP: bad checksum. From 109.75.64.47:2419 to 109.75.64.2:165 ulen 47[1463007.731673] UDP: short packet: From 0.0.0.0:42042 45/37 to 32.0.0.0:53[1463011.668364] UDP: bad checksum. From 109.75.64.47:40781 to 109.75.64.2:3637 ulen 45[1463026.609029] UDP: bad checksum. From 109.75.64.47:33189 to 109.75.64.2:57 ulen 42[1463056.294717] UDP: bad checksum. From 109.75.64.47:2276 to 109.75.64.2:48 ulen 37[1463069.532401] UDP: bad checksum. From 109.75.64.48:41445 to 109.75.64.130:165 ulen 47[1463069.639579] UDP: short packet: From 0.0.0.0:49583 3885/45 to 32.0.0.0:53[1463071.552037] UDP: bad checksum. From 109.75.64.47:35211 to 109.75.64.2:24629 ulen 46[1463093.660382] UDP: short packet: From 0.0.0.0:10758 44/42 to 32.0.0.0:53[1463121.243864] UDP: bad checksum. From 109.75.64.48:43014 to 109.75.64.130:165 ulen 51[1463124.927595] UDP: bad checksum. From 109.75.64.47:44988 to 109.75.64.2:5 ulen 39[1463133.554294] UDP: bad checksum. From 109.75.64.48:35458 to 109.75.64.130:0 ulen 47[1463145.429707] UDP: bad checksum. From 109.75.64.47:57206 to 109.75.64.2:57 ulen 50[1463157.025307] UDP: short packet: From 0.0.0.0:60127 2098/50 to 32.0.0.0:53[1463191.279843] UDP: short packet: From 0.0.0.0:53856 61479/39 to 32.0.0.0:53[1463192.221569] UDP: short packet: From 0.0.0.0:50641 3887/47 to 32.0.0.0:53[1780432.820942] UDP: short packet: From 0.0.0.0:3074 47931/46 to 0.0.0.0:53[1938600.735045] UDP: short packet: From 0.0.0.0:2862 308/41 to 0.0.0.0:53[2036827.668924] UDP: short packet: From 0.0.0.0:1612 556/50 to 0.0.0.0:53[2063660.590228] UDP: short packet: From 0.0.0.0:14885 49320/37 to 0.0.0.0:53[2101241.062399] UDP: short packet: From 0.0.0.0:7149 308/45 to 0.0.0.0:53[2123101.430038] UDP: short packet: From 0.0.0.0:1091 4362/39 to 0.0.0.0:53[2133393.371371] UDP: short packet: From 0.0.0.0:49998 32817/49 to 0.0.0.0:53[2152215.692952] UDP: short packet: From 0.0.0.0:2052 49190/38 to 0.0.0.0:53[2218202.324589] UDP: short packet: From 0.0.0.0:1051 3118/46 to 0.0.0.0:53[2290500.519469] UDP: short packet: From 0.0.0.0:1514 308/46 to 0.0.0.0:53[2293759.022147] UDP: short packet: From 0.0.0.0:2735 4362/41 to 0.0.0.0:53[2295963.403936] UDP: short packet: From 0.0.0.0:3027 308/48 to 0.0.0.0:53[2297254.559600] UDP: short packet: From 0.0.0.0:5415 49320/40 to 0.0.0.0:53[2298145.417582] UDP: short packet: From 0.0.0.0:5904 308/41 to 0.0.0.0:53[2303313.497172] UDP: short packet: From 0.0.0.0:4825 308/106 to 0.0.0.0:53[2308881.097721] UDP: short packet: From 0.0.0.0:2068 187/43 to 32.0.0.0:53[2308882.252962] UDP: short packet: From 0.0.0.0:7659 159/47 to 32.0.0.0:53[2308882.647146] UDP: bad checksum. From 109.75.64.48:45134 to 109.75.64.130:48 ulen 39[2310487.231424] UDP: short packet: From 0.0.0.0:5636 308/52 to 0.0.0.0:53Please advise!!!


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