Netlink and vnet

In Linux container runtimes, typically netlink is used with network
namespaces to manage the interfaces and addresses for a container. This
typically involves briefly joining the network namespace to perform actions
like socket(AF_NETLINK, ...).

It would be nice to find a similar approach on FreeBSD to replace the
'jexec ifconfig ...' approach which I'm using now. Is there any way to get
a netlink socket that connects to a specific vnet? This would be cleaner,
more efficient and would simplify porting the Linux runtimes to FreeBSD.