expand on "entering vm"

HOWTO.adoc

@@ -69,19 +69,13 @@ The alternative is to kill the unshare process, possibly using SIGKILL
  3. if $VM has NFS, then move that NFS tree manually
 ====
 
-.Entering a VM
+.Entering a qemu VM
 ====
  1. node# +ssh $VM+
 +
 The VMs are set up with ssh key for root's direct access.
 
-2. host# +nsenter -t $(pidof unshare) -m -p chroot
- /run/subhost/$VM/live /bin/bash+
-+
-This starts a bash shell within the live root filesystem of the
-subhost $VM.
-
- 3. master# +gnt-instance console $VM+
+ 2. master# +gnt-instance console $VM+
 +
 Serial console access is enabled for some qemu VM, by means of an
 /etc/inittab line like:
@@ -90,3 +84,22 @@ T0:23:respawn:/sbin/getty 115200 ttyS0
 ----
 This is not available for subhost $VM (lacks console).
 ====
+
+.Entering a subhost VM
+====
+ 1. node# +ssh $VM+
++
+The VMs are set up with ssh key for root's direct access.
+
+2. host# +nsenter -t $(pidof unshare) -m -p chroot
+ /run/subhost/$VM/live /bin/bash+
++
+This starts a bash shell within the live root filesystem of the
+subhost $VM.
+
+ 3. like 2, but including +ip netns exec $VM+ just before +chroot+
++
+This also enters the nework namespace, for using its networking.
+
+Serial console is not available for subhost $VM (lacks console).
+====