IKEv1 IKEv2 coexistance ?

I read in an 2013 paper by Reyk Floeter about openIKED (https://www.openbsd.org/papers/openiked-asiabsdcon2013.pdf)

"The design intends to allow operation of both protocol versions on the same host"

but

"The unprivileged IKEv1 process is currently an empty stub"

Does this mean that I cannot have both IKEv1 and IKEv2 on a single openBSD machine? Is there any way to run iked and isakmpd on the same machine ( maybe with the help of pf to redirect ike2 hosts to a non default port )?

Thanks

Chis