# IPv4 address becomes mapped IPv6:
::ffff:10.0.0.1
# Explicit mapped IPv6 preserved:
::ffff:10.0.0.1
# IPv4 and explicit mapped merge:
::ffff:10.0.0.1
# IPv4 CIDR becomes mapped range:
::ffff:10.0.0.0/126
# Mixed IPv4 and IPv6 merge:
::ffff:10.0.0.1
2001:db8::1
