bin/91993: dhclient option missing, script incompability

[Peter]

>Number:         91993
>Category:       bin
>Synopsis:       dhclient option missing, script incompability
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Jan 19 10:00:15 GMT 2006
>Closed-Date:
>Last-Modified:
>Originator:     Peter
>Release:        FreeBSD 6.0/i386
>Organization:
>Environment:
FreeBSD gw 6.0-RELEASE FreeBSD 6.0-RELEASE #0: Thu Nov  3 09:36:13 UTC 2005     root at x64.samsco.home:/usr/obj/usr/src/sys/GENERIC  i386

>Description:
In FreeBSD 5.4/i386 (and older) dhclient have an option '-r' which is now missing.
No equalient is found.

>From 5.4 dhclient manpage:
       The -r flag explicitly releases the current lease, and once  the  lease
       has been released, the client exits.

Also the script functionality in '/etc/dhclient-enter-hooks' is incompatible due
that old resolver config update function used the name make_resolv_conf(), while
the new one use add_new_resolv_conf(). End result being that old replacement
hooks won't work. I use a predefined resolver config.


>How-To-Repeat:
              
>Fix:
kill -9 <pid..> will partially do the same as the option '-r'.

Below /etc/dhclient-enter-hooks will workaround incompability bugs with resolver:
make_resolv_conf() {
  /bin/cp -pf /config/resolv.conf.luth /etc/resolv.conf
  }

add_new_resolv_conf() {
  make_resolv_conf
  }

Provided that admin is aware of it..


>Release-Note:
>Audit-Trail:
>Unformatted: