RFC-3484 - Is defining rules for IPv6 address selection.
https://www.rfc-editor.org/info/rfc3484
This patch is adding option to allow traceroute to follow RFC-3484 for IPv6 address selection by setting the environment variable TRACEROUTE_USE_RFC3484.
Modification of upstream patch released in 2.1.6 - upstream tracker https://sourceforge.net/p/traceroute/bugs/16/
Resolves: RHEL-59444
