Which statement about LISP proxy ETR is true?

Which statement about LISP proxy ETR is true?
A . A LISP site with IPv4-only RLOC connectivity can send IPv6 EIDs within an IPv4 LISP header across the IPv4 internet
B . A LISP PETR implements ITR mapping database lookup and LISP encapsulation functions on behalf of LISP-capable sites only
C . A LISP site with IPv6-only RLOC can communicate to non-LISP IPv6 interface users across IPv4 Internet, however, IPv4-only RLOC cannot communicate to non-LISP IPv4 Internet users across IPv6 Internet
D . PETR supports transport of LISP-only traffic from one address to LISP sites in the same address family

View Answer

Answer: A