dhcrelay6(8) on OpenBSD
The text fa03991cf6c2, as OpenBSD 7.7, OpenBSD 7.6, OpenBSD 7.5, OpenBSD 7.4, OpenBSD 7.3 shipped it.
Dynamic Host Configuration Protocol for IPv6 (DHCPv6) relay agent
Flags it lists
-
-E -
-I -
-R -
-d -
-i -
-l -
-o -
-v