Hmm ... It's impossible ;-) This RPM doesn't exist on any FTP server

Provides :
librdmacm-utils
librdmacm-utils(x86-64)

Requires :

libc.so.6()(64bit)
libibverbs(x86-64) = 15-7.el7_5
libibverbs.so.1()(64bit)
libc.so.6(GLIBC_2.3.4)(64bit)
libc.so.6(GLIBC_2.2.5)(64bit)
libc.so.6(GLIBC_2.14)(64bit)
librdmacm(x86-64) = 15-7.el7_5
rtld(GNU_HASH)
rpmlib(PayloadFilesHavePrefix) <= 4.0-1
libpthread.so.0(GLIBC_2.2.5)(64bit)
libpthread.so.0()(64bit)
rpmlib(FileDigests) <= 4.6.0-1
rpmlib(CompressedFileNames) <= 3.0.4-1
libibverbs.so.1(IBVERBS_1.1)(64bit)
libc.so.6(GLIBC_2.4)(64bit)
libpthread.so.0(GLIBC_2.3.2)(64bit)
librdmacm.so.1(RDMACM_1.0)(64bit)
libc.so.6(GLIBC_2.3)(64bit)
librdmacm.so.1(RDMACM_1.1)(64bit)
rpmlib(PayloadIsXz) <= 5.2-1
libibverbs.so.1(IBVERBS_1.0)(64bit)
librdmacm.so.1()(64bit)

Content of RPM :
/usr/bin/cmtime
/usr/bin/mckey
/usr/bin/rcopy
/usr/bin/rdma_client
/usr/bin/rdma_server
/usr/bin/rdma_xclient
/usr/bin/rdma_xserver
/usr/bin/riostream
/usr/bin/rping
/usr/bin/rstream
/usr/bin/ucmatose
/usr/bin/udaddy
/usr/bin/udpong
/usr/share/man/man1/cmtime.1.gz
/usr/share/man/man1/mckey.1.gz
/usr/share/man/man1/rcopy.1.gz
/usr/share/man/man1/rdma_client.1.gz
/usr/share/man/man1/rdma_server.1.gz
/usr/share/man/man1/rdma_xclient.1.gz
/usr/share/man/man1/rdma_xserver.1.gz
/usr/share/man/man1/riostream.1.gz
/usr/share/man/man1/rping.1.gz
/usr/share/man/man1/rstream.1.gz
/usr/share/man/man1/ucmatose.1.gz
/usr/share/man/man1/udaddy.1.gz
/usr/share/man/man1/udpong.1.gz