The v_xxx service (v_sshd and friends) are provided to help running
service on the root server without interfering with similar services
in the virtual servers. The various v_xxx services achieve this by
starting the corresponding xxx services using chbind to restrict
the IPs they are allowed to bind.
Previously, all those services were bound to eth0 only. Now by default
(unless overridden in /etc/vservices/xxx.conf) the services are bound
to 127.0.0.1 and eth0.
This solves for one the problem with ssh X11 port forwarding since
ssh assumes connections are done on localhost (127.0.0.1) and not