adnstest default
:12 37.45.18.172.in-addr.arpa.
 start 951961094.184850
 socket domain=PF_INET type=SOCK_DGRAM
 socket=4
 +0.000134
 fcntl fd=4 cmd=F_GETFL
 fcntl=~O_NONBLOCK&...
 +0.000053
 fcntl fd=4 cmd=F_SETFL O_NONBLOCK|...
 fcntl=OK
 +0.000035
 sendto fd=4 addr=172.18.45.6:53
     311f0100 00010000 00000000 02333702 34350231 38033137 3207696e 2d616464
     72046172 70610000 0c0001.
 sendto=43
 +0.000960
 select max=5 rfds=[4] wfds=[] efds=[] to=1.999040
 select=1 rfds=[4] wfds=[] efds=[]
 +0.000200
 recvfrom fd=4 buflen=512
 recvfrom=OK addr=172.18.45.6:53
     311f8580 00010002 00010001 02333702 34350231 38033137 3207696e 2d616464
     72046172 70610000 0c0001c0 0c000500 01000151 80003f02 33370234 35023138
     03313732 07696e2d 61646472 04617270 61047465 73740369 776a0a72 656c6174
     69766974 79086772 65656e65 6e64036f 72670275 6b00c037 000c0001 0000003c
     00060370 7472c082 c0510002 00010000 003c0006 036e7330 c05ac094 00010001
     00015180 0004ac12 2d06.
 +0.000624
 recvfrom fd=4 buflen=512
 recvfrom=EAGAIN
 +0.000222
 close fd=4
 close=OK
 +0.000197