ipv4 quadonly, make test program compile

[adns] / regress / case-trunc.sys

adnstest default
:1 trunc.test.iwj.relativity.greenend.org.uk
 start 912888921.274801
 socket type=SOCK_DGRAM
 socket=4
 +0.000207
 fcntl fd=4 cmd=F_GETFL
 fcntl=~O_NONBLOCK&...
 +0.000321
 fcntl fd=4 cmd=F_SETFL O_NONBLOCK|...
 fcntl=OK
 +0.000443
 sendto fd=4 addr=172.18.45.6:53
     311f0100 00010000 00000000 05747275 6e630474 65737403 69776a0a 72656c61
     74697669 74790867 7265656e 656e6403 6f726702 756b0000 010001.
 sendto=59
 +0.000682
 select max=5 rfds=[4] wfds=[] efds=[] to=1.999318
 select=1 rfds=[4] wfds=[] efds=[]
 +0.006406
 recvfrom fd=4 buflen=512 *addrlen=16
 recvfrom=OK addr=172.18.45.6:53
     311f8580 00010000 00010000 05747275 6e630474 65737403 69776a0a 72656c61
     74697669 74790867 7265656e 656e6403 6f726702 756b0000 01000104 74657374
     0369776a 0a72656c 61746976 69747908 67726565 6e656e64 036f7267 02756b00
     00060001 0000003c 0027036e 7330c044 0a686f73 746d6173 746572c0 44000000
     0e00000e 10000000 780064c8 00000000 3c.
 +0.000839
 recvfrom fd=4 buflen=512 *addrlen=16
 recvfrom=EAGAIN
 +0.000141
 close fd=4
 close=OK
 +0.000157