求教，ddns更新不及时

星际***

以下是日志，大神们能否找到ddns不更新是什么问题
223434       : ************ ************** ************** **************
223435  note : PID '4132' started at 2019-05-17 22:34
223435       : ddns version  : 2.7.8-1
223436       : uci configuration:
ddns.lzbs4.check_interval='5'
ddns.lzbs4.domain='lzbgsn.org'
ddns.lzbs4.enabled='1'
ddns.lzbs4.force_interval='5'
ddns.lzbs4.force_unit='minutes'
ddns.lzbs4.interface='wan'
ddns.lzbs4.ip_interface='pppoe-wan'
ddns.lzbs4.ip_source='interface'
ddns.lzbs4.lookup_host='lzbgsn.org'
ddns.lzbs4.password='***PW***'
ddns.lzbs4.service_name='dynu.com'
ddns.lzbs4.username='lzbs'
ddns.lzbs4=service
223438       : verbose mode  : 0 - run normal, NO console output
223438       : check interval: 300 seconds
223439       : force interval: 300 seconds
223439       : retry interval: 60 seconds
223439       : retry counter : 0 times
223439       : No old process
223440       : last update: never
223440       : Detect registered/public IP
223440       : #> /usr/bin/nslookup lzbgsn.org  >/var/run/ddns/lzbs4.dat 2>/var/run/ddns/lzbs4.err
223442       : Registered IP '175.xxx.xxx.124' detected
223442  info : Starting main loop at 2019-05-17 22:34
223442       : Detect local IP on 'interface'
223443       : #> ip -o addr show dev pppoe-wan scope global >/var/run/ddns/lzbs4.dat 2>/var/run/ddns/lzbs4.err
223443       : Local IP '174.xxx.xxx.205' detected on interface 'pppoe-wan'
223444       : Update needed - L: '174.xxx.xxx.205' <> R: '175.xxx.xxx.124'
223444       : #> /usr/bin/wget-ssl -nv -t 1 -O /var/run/ddns/lzbs4.dat -o /var/run/ddns/lzbs4.err --no-proxy '[url=http://api.dynu.com/nic/update?hostname=lzbgsn.org&myip=174.xxx.xxx.205&username=lzbs&password=***PW***']http://api.dynu.com/nic/update?hostname=lzbgsn.org&myip=174.xxx.xxx.205&username=lzbs&password=***PW***'[/url]
223703 ERROR : GNU Wget Error: '4'
223703       : failed: Operation timed out.
223703  WARN : Transfer failed - retry 1/0 in 60 seconds

lcs***

到/var/run/ddns/lzbs4.err看看报错是什么，或者直接wget http://api.dynu.com/nic/update?h ... =lzbs&password=***PW*** 看看报错是什么

dj***

223703 ERROR : GNU Wget Error: '4'

4 表示 Network failure