Steps to "un-hang" a hung domain

      1. ssp# check_host -v > /tmp/checkhost.out
      2. ssp# hostinfo -h > /tmp/hostinfo-h.out
      3. ssp# sigbcmd -p [bootproc] obp (note: same as ~#)
      4. ssp# sigbcmd -p [different proc] obp


           if sigbcmd works, run the following:

           ok>ctrace
           ok>.registers
           ok>.locals
           ok> sync

      5. ssp# sigbcmd -p [bootproc] panic
      6. ssp# hostint
      7. ssp# hostreset
      8. ssp# bringup -A off