Public bug reported:
Version:
Description: Ubuntu 20.04 LTS
Release: 20.04
Codename: focal
I have changed machine's IP from 192.168.4.55 to 192.168.4.5 in the
netplan config file:
leonbrag@minivm:/etc/network$ cat /etc/netplan/00-installer-config.yaml
# This is the network config written by 'subiquity'
network:
version: 2
renderer: networkd
ethernets:
eth0:
dhcp4: no
addresses: [192.168.4.5/24]
gateway4: 192.168.4.1
nameservers:
addresses: [192.168.4.1]
However old IP did not go away and machine can be pinged using old IP as well.
leonbrag@minivm:/etc/network$ ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group
default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group
default qlen 1000
link/ether 00:15:5d:91:c9:00 brd ff:ff:ff:ff:ff:ff
inet 192.168.4.5/24 brd 192.168.4.255 scope global eth0
valid_lft forever preferred_lft forever
inet 192.168.4.55/24 brd 192.168.4.255 scope global secondary noprefixroute
eth0
valid_lft forever preferred_lft forever
inet6 2601:600:9480:1e4:6b2b:1db2:658b:e692/64 scope global dynamic
mngtmpaddr noprefixroute
valid_lft 2591616sec preferred_lft 604416sec
inet6 2601:600:9480:1e4:215:5dff:fe91:c900/64 scope global dynamic
mngtmpaddr noprefixroute
valid_lft 2591616sec preferred_lft 604416sec
inet6 fe80::215:5dff:fe91:c900/64 scope link
valid_lft forever preferred_lft forever
leonbrag@minivm:/etc/network$
machine was rebooted more then once.
** Affects: ubuntu
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1876020
Title:
Old IP does not go away
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