udhcpc question
Cristian Ionescu-Idbohrn
cristian.ionescu-idbohrn at axis.com
Wed Dec 22 10:12:07 UTC 2010
On Wed, 22 Dec 2010, Denys Vlasenko wrote:
> On Monday 20 December 2010 20:07, Christopher Barry wrote:
> > All,
> >
> > Anyone know the correct incantation to release an ip on an interface
> > with udhcpc? I can't seem to make it work for some reason.
> > Running BB 1.16.1
>
> What do you mean by "release IP"?
>
> $ udhcpc --help
> BusyBox v1.18.0 (2010-11-23 00:11:12 CET) multi-call binary.
>
> Usage: udhcpc [-fbnqvoCR] [-i IFACE] [-r IP] [-s PROG] [-p PIDFILE]
> [-H HOSTNAME] [-V VENDOR] [-x OPT:VAL]... [-O OPT]...
>
> -i,--interface IFACE Interface to use (default eth0)
> -p,--pidfile FILE Create pidfile
> -s,--script PROG Run PROG at DHCP events (default /usr/share/udhcpc/default.script)
> -t,--retries N Send up to N discover packets
> -T,--timeout N Pause between packets (default 3 seconds)
> -A,--tryagain N Wait N seconds after failure (default 20)
> -f,--foreground Run in foreground
> -b,--background Background if lease is not obtained
> -n,--now Exit if lease is not obtained
> -q,--quit Exit after obtaining lease
> -R,--release Release IP on exit
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this?
Or this:
udhcpc responds to the following signals:
SIGUSR1
This signal causes udhcpc to renew the current lease or, if it
does not have one, obtain a new lease.
SIGUSR2
This signal caused udhcpc to release the current lease.
Cheers,
--
Cristian
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