How can I clear the IP address of Ethernet interface without cycling the interface up/down or restarting it

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Chapters
00:00 How Can I Clear The Ip Address Of Ethernet Interface Without Cycling The Interface Up/Down Or Restar
00:24 Answer 1 Score 188
00:40 Accepted Answer Score 30
00:50 Answer 3 Score 19
01:01 Answer 4 Score 2
01:12 Thank you

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Full question
https://superuser.com/questions/153559/h...

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Tags
#linux #networking

#avk47

ANSWER 1

Score 188

Use ip from iproute2. (You need to also specify the prefix length though.)

ip addr del 10.22.30.44/16 dev eth0

To remove all addresses (in case you have multiple):

ip addr flush dev eth0

ACCEPTED ANSWER

Score 30

As simple as ifconfig eth0 0.0.0.0. They should have put it in the manual.

ANSWER 3

Score 19

To remove all adreses from all interfaces i used for loop:

for i in $(ls /sys/class/net/) ; do
    /usr/sbin/ip addr flush $i &
done

ANSWER 4

Score 2

Perhaps you are just looking to get a new IP from the [DHCP-enabled] router? In this case call

dhclient eth0