Why does resolver in RHEL7 send DNS queries with short host name to name server without adding domain in search list?
Issue
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Why does resolver in RHEL7 send DNS queries with short host names to name server instead of adding DOMAIN name in search list?
# egrep 'sendto' trace.txt 3327 12:51:43.836115 sendto(3, "E>\1\0\0\1\0\0\0\0\0\0\3www\3abc\5local\0\0\34\0\1", 31, MSG_NOSIGNAL, NULL, 0) = 31 <0.000083> 3327 12:51:43.839379 sendto(3, "\340\16\1\0\0\1\0\0\0\0\0\0\3www\2ab\2cd\2ef\5local\0\0\34\0\1", 36, MSG_NOSIGNAL, NULL, 0) = 36 <0.000077> 3327 12:51:43.852142 sendto(3, "\34\211\1\0\0\1\0\0\0\0\0\0\3www\0\0\34\0\1", 21, MSG_NOSIGNAL, NULL, 0) = 21 <0.000085> <<< See here 3327 12:51:43.881946 sendto(3, "k\232\1\0\0\1\0\0\0\0\0\0\3www\3abc\5local\0\0\1\0\1", 31, MSG_NOSIGNAL, NULL, 0) = 31 <0.000049> 3327 12:51:43.884668 sendto(3, "'\n\1\0\0\1\0\0\0\0\0\0\3www\2ab\2cd\2ef\5local\0\0\1\0\1", 36, MSG_NOSIGNAL, NULL, 0) = 36 <0.000051> 3327 12:51:43.886596 sendto(3, "\252\7\1\0\0\1\0\0\0\0\0\0\3www\0\0\1\0\1", 21, MSG_NOSIGNAL, NULL, 0) = 21 <0.000029> <<< See here
Environment
- Red Hat Enterprise Linux 7
- glibc
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