dns not working on older clients

Question

dns not working on older clients

Hi - I'm living on borrowed time hear, and any thoughts ideas would be greatly appreciated

The problem

We have a very old ageing xServer that did dns dhcp vpn etc very well for a big number of years -

Runs DNS for all the outside world and we have had no problems using this and for our internal dns stuff as well

Problem - the machine is becoming unstable - will not start up some times - no Video some times etc etc... So I brought a mac mini and & I put Yosimite server on the thing and manually re configured everything (The original was a lion server!)

Anyway the old xServer machine would not start up this morning so I thought ok lets just get the new mac mini server running - this is where things go weird!

My machine (which is running 10.10 ) when configured my machine to run on / off the new Mac Mini worked fine - unfortunately all the other macs had huge problems with this - they could only find some pages, could not find local dns related assets nslookup commands from the older mac's to the new Mac Mini failed - but from my machine worked.

Any idea what the heck might be going on hear?

Mac mini, OS X Yosemite (10.10.3), Running Server

Posted on Jun 2, 2015 9:29 PM

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Answer 1

cdhw

Level 4

3,588 points

Jun 3, 2015 3:29 AM in response to nevets anderson

Have you flushed the DNS caches on the older machines? The precise command to do this seemed to change with every version of OS X, but a few seconds Googling should find the one(s) you need.

C.

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Answer 2

Jun 3, 2015 6:05 AM in response to cdhw

Did Try flushing the cache - Seem to be getting intermittent behaviour still

This is a tcp dump of what goes on when a dns reques fails from port 53

192.168.1.4 is the machine on the network

192.168.1.200 is the Mac Mini Server running DNS service

192.168.1.4.56785 > 192.168.1.200.53: [udp sum ok] 31708+ A? zip.com.au. (28)

22:55:39.163058 IP (tos 0x0, ttl 255, id 65322, offset 0, flags [none], proto UDP (17), length 56)

192.168.1.4.58150 > 192.168.1.200.53: [udp sum ok] 41746+ AAAA? zip.com.au. (28)

22:55:39.164614 IP (tos 0x0, ttl 64, id 33126, offset 0, flags [none], proto UDP (17), length 98)

192.168.1.200.53 > 192.168.1.4.56785: [udp sum ok] 31708 NXDomain* q: A? zip.com.au. 0/1/0 ns: com.au. [3h] SOA com.au. admin.com.au. 2015060363 3600 900 1209600 86400 (70)

22:55:39.164681 IP (tos 0x0, ttl 64, id 29513, offset 0, flags [none], proto UDP (17), length 98)

192.168.1.200.53 > 192.168.1.4.58150: [udp sum ok] 41746 NXDomain* q: AAAA? zip.com.au. 0/1/0 ns: com.au. [3h] SOA com.au. admin.com.au. 2015060363 3600 900 1209600 86400 (70)

22:55:39.170480 IP (tos 0x0, ttl 255, id 45062, offset 0, flags [none], proto UDP (17), length 60)

192.168.1.4.60284 > 192.168.1.200.53: [udp sum ok] 8154+ A? www.zip.com.au. (32)

22:55:39.170615 IP (tos 0x0, ttl 255, id 6153, offset 0, flags [none], proto UDP (17), length 60)

192.168.1.4.53195 > 192.168.1.200.53: [udp sum ok] 6827+ AAAA? www.zip.com.au. (32)

22:55:39.172526 IP (tos 0x0, ttl 64, id 28794, offset 0, flags [none], proto UDP (17), length 102)

192.168.1.200.53 > 192.168.1.4.53195: [udp sum ok] 6827 NXDomain* q: AAAA? www.zip.com.au. 0/1/0 ns: com.au. [3h] SOA com.au. admin.com.au. 2015060363 3600 900 1209600 86400 (74)

22:55:39.172631 IP (tos 0x0, ttl 64, id 31316, offset 0, flags [none], proto UDP (17), length 102)

192.168.1.200.53 > 192.168.1.4.60284: [udp sum ok] 8154 NXDomain* q: A? www.zip.com.au. 0/1/0 ns: com.au. [3h] SOA com.au. admin.com.au. 2015060363 3600 900 1209600 86400 (74)

22:55:39.884987 IP (tos 0x0, ttl 255, id 9312, offset 0, flags [none], proto UDP (17), length 64)

192.168.1.4.62991 > 192.168.1.200.53: [udp sum ok] 11984+ A? ping.chartbeat.net. (36)

22:55:39.901579 IP (tos 0x0, ttl 64, id 65144, offset 0, flags [none], proto UDP (17), length 393)

192.168.1.200.53 > 192.168.1.4.62991: [udp sum ok] 11984 q: A? ping.chartbeat.net. 8/4/4 ping.chartbeat.net. [16s] A 54.243.67.173, ping.chartbeat.net. [16s] A 54.243.58.244, ping.chartbeat.net. [16s] A 184.73.220.127, ping.chartbeat.net. [16s] A 23.21.118.65, ping.chartbeat.net. [16s] A 54.243.65.90, ping.chartbeat.net. [16s] A 23.21.163.138, ping.chartbeat.net. [16s] A 23.21.149.132, ping.chartbeat.net. [16s] A 184.72.242.140 ns: chartbeat.net. [1h10m16s] NS ns-125.awsdns-15.com., chartbeat.net. [1h10m16s] NS ns-1726.awsdns-23.co.uk., chartbeat.net. [1h10m16s] NS ns-905.awsdns-49.net., chartbeat.net. [1h10m16s] NS ns-1329.awsdns-38.org. ar: ns-125.awsdns-15.com. [5h40m6s] A 205.251.192.125, ns-905.awsdns-49.net. [5h35m44s] A 205.251.195.137, ns-1329.awsdns-38.org. [5h26m31s] A 205.251.197.49, ns-1726.awsdns-23.co.uk. [5h44m54s] A 205.251.198.190 (365)

22:55:53.351898 IP (tos 0x0, ttl 255, id 8285, offset 0, flags [none], proto UDP (17), length 71)

192.168.1.4.62421 > 192.168.1.200.53: [udp sum ok] 8678+ A? e3191.dscc.akamaiedge.net. (43)

22:55:53.352123 IP (tos 0x0, ttl 255, id 62843, offset 0, flags [none], proto UDP (17), length 71)

192.168.1.4.56861 > 192.168.1.200.53: [udp sum ok] 37447+ AAAA? e3191.dscc.akamaiedge.net. (43)

22:55:53.373035 IP (tos 0x0, ttl 64, id 56910, offset 0, flags [none], proto UDP (17), length 383)

192.168.1.200.53 > 192.168.1.4.62421: [udp sum ok] 8678 q: A? e3191.dscc.akamaiedge.net. 1/8/8 e3191.dscc.akamaiedge.net. [8s] A 23.7.20.225 ns: dscc.akamaiedge.net. [16m28s] NS n0dscc.akamaiedge.net., dscc.akamaiedge.net. [16m28s] NS n5dscc.akamaiedge.net., dscc.akamaiedge.net. [16m28s] NS n4dscc.akamaiedge.net., dscc.akamaiedge.net. [16m28s] NS n1dscc.akamaiedge.net., dscc.akamaiedge.net. [16m28s] NS n7dscc.akamaiedge.net., dscc.akamaiedge.net. [16m28s] NS n6dscc.akamaiedge.net., dscc.akamaiedge.net. [16m28s] NS n3dscc.akamaiedge.net., dscc.akamaiedge.net. [16m28s] NS n2dscc.akamaiedge.net. ar: n0dscc.akamaiedge.net. [7m29s] A 104.71.131.99, n1dscc.akamaiedge.net. [7m59s] A 61.9.129.199, n2dscc.akamaiedge.net. [52m49s] A 184.84.221.117, n3dscc.akamaiedge.net. [5m9s] A 210.11.142.67, n4dscc.akamaiedge.net. [33m8s] A 104.71.131.97, n5dscc.akamaiedge.net. [1h18m22s] A 104.71.131.99, n6dscc.akamaiedge.net. [7m49s] A 104.71.131.99, n7dscc.akamaiedge.net. [34m34s] A 104.71.131.107 (355)

22:55:53.377882 IP (tos 0x0, ttl 64, id 49506, offset 0, flags [none], proto UDP (17), length 423)

192.168.1.200.53 > 192.168.1.4.56861: [udp sum ok] 37447 q: AAAA? e3191.dscc.akamaiedge.net. 2/8/8 e3191.dscc.akamaiedge.net. [9s] AAAA 2600:1415:11:18a::c77, e3191.dscc.akamaiedge.net. [9s] AAAA 2600:1415:11:186::c77 ns: dscc.akamaiedge.net. [16m28s] NS n6dscc.akamaiedge.net., dscc.akamaiedge.net. [16m28s] NS n1dscc.akamaiedge.net., dscc.akamaiedge.net. [16m28s] NS n5dscc.akamaiedge.net., dscc.akamaiedge.net. [16m28s] NS n3dscc.akamaiedge.net., dscc.akamaiedge.net. [16m28s] NS n4dscc.akamaiedge.net., dscc.akamaiedge.net. [16m28s] NS n2dscc.akamaiedge.net., dscc.akamaiedge.net. [16m28s] NS n0dscc.akamaiedge.net., dscc.akamaiedge.net. [16m28s] NS n7dscc.akamaiedge.net. ar: n0dscc.akamaiedge.net. [7m29s] A 104.71.131.99, n1dscc.akamaiedge.net. [7m59s] A 61.9.129.199, n2dscc.akamaiedge.net. [52m49s] A 184.84.221.117, n3dscc.akamaiedge.net. [5m9s] A 210.11.142.67, n4dscc.akamaiedge.net. [33m8s] A 104.71.131.97, n5dscc.akamaiedge.net. [1h18m22s] A 104.71.131.99, n6dscc.akamaiedge.net. [7m49s] A 104.71.131.99, n7dscc.akamaiedge.net. [34m34s] A 104.71.131.107 (395)

22:56:02.490956 IP (tos 0x0, ttl 64, id 43116, offset 0, flags [none], proto UDP (17), length 61)

192.168.1.4.33598 > 192.168.1.200.53: [udp sum ok] 977+ A? ssl.gstatic.com. (33)

22:56:02.491098 IP (tos 0x0, ttl 64, id 2160, offset 0, flags [none], proto UDP (17), length 61)

192.168.1.4.41298 > 192.168.1.200.53: [udp sum ok] 41202+ AAAA? ssl.gstatic.com. (33)

22:56:02.664660 IP (tos 0x0, ttl 64, id 26840, offset 0, flags [none], proto UDP (17), length 537)

192.168.1.200.53 > 192.168.1.4.33598: [udp sum ok] 977 q: A? ssl.gstatic.com. 12/13/3 ssl.gstatic.com. [3m9s] A 150.101.213.153, ssl.gstatic.com. [3m9s] A 150.101.213.167, ssl.gstatic.com. [3m9s] A 150.101.213.159, ssl.gstatic.com. [3m9s] A 150.101.213.174, ssl.gstatic.com. [3m9s] A 150.101.213.187, ssl.gstatic.com. [3m9s] A 150.101.213.173, ssl.gstatic.com. [3m9s] A 150.101.213.160, ssl.gstatic.com. [3m9s] A 150.101.213.152, ssl.gstatic.com. [3m9s] A 150.101.213.166, ssl.gstatic.com. [3m9s] A 150.101.213.181, ssl.gstatic.com. [3m9s] A 150.101.213.180, ssl.gstatic.com. [3m9s] A 150.101.213.146 ns: com. [1d23h59m13s] NS k.gtld-servers.net., com. [1d23h59m13s] NS l.gtld-servers.net., com. [1d23h59m13s] NS i.gtld-servers.net., com. [1d23h59m13s] NS d.gtld-servers.net., com. [1d23h59m13s] NS f.gtld-servers.net., com. [1d23h59m13s] NS g.gtld-servers.net., com. [1d23h59m13s] NS a.gtld-servers.net., com. [1d23h59m13s] NS m.gtld-servers.net., com. [1d23h59m13s] NS h.gtld-servers.net., com. [1d23h59m13s] NS c.gtld-servers.net., com. [1d23h59m13s] NS e.gtld-servers.net., com. [1d23h59m13s] NS j.gtld-servers.net., com. [1d23h59m13s] NS b.gtld-servers.net. ar: a.gtld-servers.net. [1h48m58s] A 192.5.6.30, a.gtld-servers.net. [5h49m3s] AAAA 2001:503:a83e::2:30, b.gtld-servers.net. [3h3m54s] A 192.33.14.30 (509)

22:56:02.666537 IP (tos 0x0, ttl 64, id 61195, offset 0, flags [none], proto UDP (17), length 529)

192.168.1.200.53 > 192.168.1.4.41298: [udp sum ok] 41202 q: AAAA? ssl.gstatic.com. 1/13/12 ssl.gstatic.com. [3m50s] AAAA 2404:6800:4003:c00::5e ns: com. [1d23h59m13s] NS k.gtld-servers.net., com. [1d23h59m13s] NS a.gtld-servers.net., com. [1d23h59m13s] NS j.gtld-servers.net., com. [1d23h59m13s] NS l.gtld-servers.net., com. [1d23h59m13s] NS d.gtld-servers.net., com. [1d23h59m13s] NS m.gtld-servers.net., com. [1d23h59m13s] NS g.gtld-servers.net., com. [1d23h59m13s] NS b.gtld-servers.net., com. [1d23h59m13s] NS c.gtld-servers.net., com. [1d23h59m13s] NS h.gtld-servers.net., com. [1d23h59m13s] NS f.gtld-servers.net., com. [1d23h59m13s] NS i.gtld-servers.net., com. [1d23h59m13s] NS e.gtld-servers.net. ar: a.gtld-servers.net. [1h48m58s] A 192.5.6.30, a.gtld-servers.net. [5h49m3s] AAAA 2001:503:a83e::2:30, b.gtld-servers.net. [3h3m54s] A 192.33.14.30, b.gtld-servers.net. [4h4m27s] AAAA 2001:503:231d::2:30, c.gtld-servers.net. [2h4m10s] A 192.26.92.30, d.gtld-servers.net. [4h2m38s] A 192.31.80.30, e.gtld-servers.net. [4h2m21s] A 192.12.94.30, f.gtld-servers.net. [33m50s] A 192.35.51.30, g.gtld-servers.net. [4h5m8s] A 192.42.93.30, h.gtld-servers.net. [3h3m49s] A 192.54.112.30, i.gtld-servers.net. [4h2m4s] A 192.43.172.30, j.gtld-servers.net. [3h51m19s] A 192.48.79.30 (501)

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