On Thu, Mar 15, 2012 at 08:49:55PM -0400, Eric W. Bates wrote: > On 3/15/2012 7:27 PM, Kevin Oberman wrote: > > 2012/3/14 Eugene Grosbein<egrosb...@rdtc.ru>: > >> 15.03.2012 06:33, hiren panchasara ?????: > >> > >>> network_interfaces is basically historic rudiment > >>> used in 2.2.x FreeBSD version and alike. > >>> > >>> In general, you should not use it in modern version at all. > >>> > >>> > >>> Thanks Eugene. > >>> > >>> So, the only way to specify boottime configuration (that survives > >>> reboots) for an interface in rc.conf is: > >>> ifconfig_em0="dhcp" ? > >> > >> Yes, thats what man rc.conf says. > > > > Minor correction, but the man page says 'ifconfig_em0="DHCP". It may > > not be case sensitive, but I have always uded CAPS like the man page > > specifies. Also, I usually end up specifying SYNCDHCP to avoid having > > something else that requires network starting before the interface is > > configured. > > > > Of course, ifconfig_* may have any valid ifconfig argument in it, but > > remember the rc.conf is shell, so you must put all of the definition > > in a single statement. You can't do: > > ifconfig_em0="DHCP" > > ifconfig_em0="mediaopt half-duplex" > > That will not do DHCP, so hte interface will not come up. Of course, > > you can concatinate a second entry to the first using normal sh > > syntax. > > FreeBSD rc has a clever way around this. In /etc/network.subr > ifscript_up(), if the file /etc/start_if.em0 is readable, it will be dot > executed. So you can put as much multi-line config info in there as you > would like. e.g.: > > ifconfig em0 mediaopt half-duplex > dhclient em0 > > As long as network_interfaces includes em0 (and it will be automatically > included by default), then start_if.em0 will be run. Conversely, > stop_if.em0 will also run when rc runs at shutdown.
On many cases you can simply use: ifconfig_em0="DHCP mediaopt half-duplex" While DHCP is not an actual ifconfig option we strip it from the list (along with several other psuedo-arguments) and pass the remainder to ifconfig. Not all option will work this way, but I believe mediaopt does. -- Brooks
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