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旧 Dec 20th, 2012, 08:18   只看该作者   #41
sgyyz
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作者: walkway 查看帖子
modem reboot一次就会更新一个IP地址,除非他们抓个现行。
搞个定时器,每天半夜Modem断电一次,我就不明白他们怎么查?
You probably didn't know about DHCP lease expiration.

Usually in the DHCP scope there is a setting to determine how long it should hold the IP for the disconnected device before it is released to the next device requesting for a dynamic IP.

To avoid DHCP broadcast storm in a large network scope it is best not to set a dynamic IP to expire daily. Usually it's 8 days. Unless your modem is disconnected for at least 8 days, most probably it would still get back the same IP it was assigned to.

But that is not the point. The MAC address of a network device is the one people use to identify the owner.

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旧 Dec 20th, 2012, 09:04   只看该作者   #42
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作者: sgyyz 查看帖子
You probably didn't know about DHCP lease expiration.

Usually in the DHCP scope there is a setting to determine how long it should hold the IP for t...
cabel,adsl不一样, cable的ip变的慢,要8天, adsl基本是马上变ip
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旧 Dec 20th, 2012, 09:34   只看该作者   #43
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这种事小公司吓得半死,赶快找几个老实的供出去. Bell,Roger对做的太过分的用户会先发几次警告信.
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旧 Dec 20th, 2012, 13:04   只看该作者   #44
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作者: googlebot 查看帖子
cabel,adsl不一样, cable的ip变的慢,要8天, adsl基本是马上变ip
I didn't know about ADSL. Been always a cable Internet user. If the subnet is small I think it's okay. Or they may have other ways to deal with it.

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