ÿØÿà JFIF 

  
 
  ÿÛ C      

!"$"$ÿÛ C
  ÿÂ p 
" 

ÿÄ  

 

          
 ÿÄ 


 

           
ÿÚ 
   
ÕÔË®
(%	aA*‚XYD¡(J„¡E¢RE,P€XYae )(E¤²€B¤R¥	BQ¤¢ X«)X…€¤   
@  

  ..............................................................................................................................................................................
.............................................................................                                                  
                                                                                                                                                                                     ÿØÿà JFIF 

  
 
  ÿÛ C      

!"$"$ÿÛ C
  ÿÂ p 
" 

ÿÄ  

 

          
 ÿÄ 


 

           
ÿÚ 
   
ÕÔË®
(%	aA*‚XYD¡(J„¡E¢RE,P€XYae )(E¤²€B¤R¥	BQ¤¢ X«)X…€¤   
@  

  ..............................................................................................................................................................................
.............................................................................                                                  
                                                                                                                                                                                     # Lookup the hostname in DNS if not set

lookup_hostname()
{
	[ -z "$new_ip_address" ] && return 1
	# Silly ISC programs love to send error text to stdout
	if command -v dig >/dev/null 2>&1; then
		h=$(dig +short -x $new_ip_address)
		if [ $? = 0 ]; then
			echo "$h" | sed 's/\.$//'
			return 0
		fi
	elif command -v host >/dev/null 2>&1; then
		h=$(host $new_ip_address)
		if [ $? = 0 ]; then 
			echo "$h" \
			| sed 's/.* domain name pointer \(.*\)./\1/'
			return 0
		fi
	elif command -v getent >/dev/null 2>&1; then
		h=$(getent hosts $new_ip_address)
		if [ $? = 0 ]; then
			echo "$h" | sed 's/[^ ]* *\([^ ]*\).*/\1/'
			return 0
		 fi
	fi
	return 1
}

set_hostname()
{
	if [ -z "${new_host_name}${new_fqdn_name}" ]; then
		export new_host_name="$(lookup_hostname)"
	fi
}

if $if_up; then
	set_hostname
fi