Why not reset the ip after a reset openwrt out of recovery mode?

On the openwrt router with all my devices dhcp issues rsnake.
Wanted to reset openwrt. Entered into recovery mode:
mount_root
mtd -r erase rootfs_data
After the restart all reset packets are removed asks for a password. Everything seems OK, but deism again turned out to be the same ip that was to reset the router. How is that even possible, I rubbed the whole of rootfs.
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tplink 842nd v2 / openwrt BB 14.07
July 8th 19 at 16:32
2 answers
July 8th 19 at 16:34
Solution
When communicating between the client and the server by the DHCP client in the options box specifies the last issued to the client IP address. That is, the client computer remembers your last received address and reports it to the dhcp server. The DHCP server can score on this field and give any address of the range, but in most cases it will check and try to give the old address.

Read more about the work of the Protocol DHCP: https://ru.wikipedia.org/wiki/DHCP
The answer to your question starts with "Consider the example of the process of obtaining the IP address by the client from the DHCP server."
July 8th 19 at 16:36
and the fact that at issuance the SP in computers comes the time of the lease you do not mind ? or just overload the switch , or disable the network card and enable
You can read more. I'm stupid. And I Google blocked - Aurelia56 commented on July 8th 19 at 16:39
after peregruzki the ip remain as it was - Aurelia56 commented on July 8th 19 at 16:42
if the wind then it is necessary ipconfig /renew - emerson.Bechtel commented on July 8th 19 at 16:45
: they just get the IP on DHCP or spelled out in the manual - Daisha.Funk79 commented on July 8th 19 at 16:48

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