MFstable/10 r301615:

MFstable/10 r301615:

MFC r299844,r300931:

r299844:

Make hostid_save depend on hostid

r300931:

Make netif REQUIRE hostid

As noted in the PR, if etc/rc.d/zvol is removed, netif will be run before
hostid, and the MAC address generated for any bridge devices will be
non-deterministic. Make the MAC address generated be deterministic for
bridge devices by explicitly REQUIRE'ing hostid.

This fixes up the rest of the PR, inadvertently committed in r299844

PR: 195188

git-svn-id: svn://svn.freebsd.org/base/stable/9@301616 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f