[ts-7000] udhcpc not calling default.script for DHCP Renew

["Kok Hua" <>]

Hi, 

I have a problem with udhcpc not calling my default.script when there is a DHCP 
Renew. 

I configured my TS-7260 board to start the udhcpc command to get an IP address 
from a DHCP server. 

$ /sbin/udhcpc -n -i eth0
info, udhcpc (v0.9.9-pre) started
debug, Sending discover...
debug, Sending select for 192.168.0.1...
info, Lease of 192.168.0.1 obtained, lease time 1800
adding gateway 192.168.0.150
adding dns 192.168.0.10
adding dns 192.168.0.20

My default.script has been called by udhcpc with a "bound" event, which does 
the ifconfig and update the resolv.conf.

Before the expiry of the lease time, I forced a DHCP renew. I did that by 
sending a SIGUSR1 to the udhcpc process (pid: 181)

$ kill -SIGUSR1 181 

I observed via Wireshark that a DHCP Request and DCHP ACK has been exchanged 
between the TS-7260 board and the DHCP server. However, my default.script was 
not called upon by udhcpc at all. The same udhcpc process is still running. 

So, is there a problem with the udhcpc I am using?

Below is my default.script for udhcpc:
------------------------------------------
#!/bin/sh
# udhcpc script edited by Tim Riker <>

[ -z "$1" ] && echo "Error: should be called from udhcpc" && exit 1

RESOLV_CONF="/etc/udhcpc/resolv.conf"

[ -n "$broadcast" ] && BROADCAST_STR="broadcast $broadcast"
[ -n "$subnet" ] && NETMASK_STR="netmask $subnet"

case "$1" in
  deconfig)
    /sbin/ifconfig $interface 0.0.0.0
    if test -f /etc/sysconfig/ifcfg-$interface
    then
      . /etc/sysconfig/ifcfg-$interface
      /sbin/ifconfig $interface ${IPADDR} broadcast ${BROADCAST} \
        netmask ${NETMASK}
    fi
    ;;

  renew|bound)
    /sbin/ifconfig $interface $ip $BROADCAST_STR $NETMASK_STR
    if [ -n "$router" ] ; then
      echo adding gateway $router
    fi
        
    if [ -n "$dns" ] ; then
      echo -n > $RESOLV_CONF
      for i in $dns ; do
        echo adding dns $i
        echo nameserver $i >> $RESOLV_CONF
      done
    fi
    ;;
esac

exit 0
------------------------------------------

 





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