The value of vRtrMplsGeneralShortTTLPropTrans specifies whether or not
to enable the propagation of time to live (TTL) from the IP packet
header into the header of the resulting MPLS packet for all transit
packets forwarded over a LSP shortcut. When the value is 'true' TTL
is propagated from the IP packet header into the header of the
resulting MPLS packet.