Why does genisoimage shorten the file names during ISO formation? How can one skip it?

Issue

• The ISO is being created and it's shortening the file names.

[root@test ~]# mkisofs  -R -full-iso9660-filenames -o rhel6.iso rhel6
I: -input-charset not specified, using utf-8 (detected in locale settings)
Using NET_SNMP_LIBS_5_5_57_EL6_000.RP;1 for  /net-snmp-libs-5.5-57.el6_8.1.i686.rpm (net-snmp-libs-5.5-57.el6_8.1.x86_64.rpm)
Using TCP_WRAPPERS_LIBS_7_6_58_000.RP;1 for  /tcp_wrappers-libs-7.6-58.el6.x86_64.rpm (tcp_wrappers-libs-7.6-58.el6.i686.rpm)
Using CYRUS_SASL_LIB_2_1_23_15_E000.R;1 for  /cyrus-sasl-lib-2.1.23-15.el6_6.2.i686.rpm (cyrus-sasl-lib-2.1.23-15.el6_6.2.x86_64.rpm)
Using KERNEL_HEADERS_2_6_32_642_1000.;1 for  /kernel-headers-2.6.32-642.13.1.el6.x86_64.rpm (kernel-headers-2.6.32-642.11.1.el6.x86_64.rpm)
Using NSS_SOFTOKN_3_14_3_23_3_E000.RP;1 for  /nss-softokn-3.14.3-23.3.el6_8.i686.rpm (nss-softokn-3.14.3-23.3.el6_8.x86_64.rpm)

• How can one skip it?