https://bugs.openldap.org/show_bug.cgi?id=10196

Issue ID: 10196 Summary: ldapsearch with -h localhost resulting dns lookup Product: OpenLDAP Version: 2.4.46 Hardware: x86_64 OS: Linux Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: client tools Assignee: bugs@openldap.org Reporter: mca100309@gmail.com Target Milestone: ---

ldapsearch -h localhost -p 16611 xxxxxxxx

socket(AF_INET6, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, IPPROTO_IP) = 3 setsockopt(3, SOL_IPV6, IPV6_RECVERR, [1], 4) = 0 connect(3, {sa_family=AF_INET6, sin6_port=htons(53), sin6_flowinfo=htonl(0), inet_pton(AF_INET6, "fd03::a", &sin6_addr), sin6_scope_id=0}, 28) = 0 poll([{fd=3, events=POLLOUT}], 1, 0) = 1 ([{fd=3, revents=POLLOUT}]) sendto(3, "R$\1\0\0\1\0\0\0\0\0\0'odinfn5gceir201-eir"..., 57, MSG_NOSIGNAL, NULL, 0) = 57 poll([{fd=3, events=POLLIN}], 1, 5000) = 1 ([{fd=3, revents=POLLIN}]) ioctl(3, FIONREAD, [57]) = 0 recvfrom(3, "R$\201\202\0\1\0\0\0\0\0\0'odinfn5gceir201-eir"..., 1024, 0, {sa_family=AF_INET6, sin6_port=htons(53), sin6_flowinfo=htonl(0), inet_pton(AF_INET6, "fd03::a", &sin6_addr), sin6_scope_id=0}, [28]) = 57 close(3)

Whenever ldapsearch is executed localhost it it initiating a dnslookup also. It is happening in some platform only