Public bug reported:
i have a server (Proliant DL380 gen9). it has 4 Ethernet ports eno1 thru eno4.
i am using ubuntu 17.10 and KVM with 4 multiple guest VMs.
under Ubuntu 17.04 i had this in my /etc/network/interfaces:
auto virbr0
iface virbr0 inet dhcp
bridge_ports eno1
bridge_stp off
bridge_fd 0
bridge_maxwait 0
So i did not define eno2 thru eno4 and everything worked fine.
After i upgraded to Ubuntu 17.10, i suddenly started having IP conflict from
the DHCP server.
after a lot of search, i figured my problem may be from the eno2-4 are getting
IP even though they are dedicated to VMs.
so i defined them as manual in /etc/network/interfaces as such:
# Ethernet port for cad-srvr VM
auto eno2
iface eno2 inet manual
up ifconfig eno2 up
# Ethernet port for nxtcld-srvr VM
auto eno3
iface eno3 inet manual
up ifconfig eno3 up
# Ethernet port for Future-srvr VM
auto eno4
iface eno4 inet manual
up ifconfig eno4 up
This caused the DHCP warnings of conflicted IP to disappear.
I am not sure if this is per design or not...
please advice me if i need to provide any other info
** Affects: apparmor (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1741331
Title:
Ethernet interface aquire IP even if not defined in
/etc/network/interfaces
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