Public bug reported:
1) lsb_release -rd
Description: Ubuntu 20.04.1 LTS
Release: 20.04
2) Package version
Unknown. Whatever version is part of ubuntu-20.04.1-live-server-amd64.iso
2020-07-31 17:35
3) What I expected
For valid manual network settings to work.
4) What happened instead
Manual network configuration fails saying:
"'xxx.xxx.17.114' is not contained in '255.255.254.0/23'"
With network settings:
Subnet: 255.255.254.0/23
Address: xxx.xxx.17.114
Gateway: xxx.xxx.16.1
Subnet certainly contains xxx.xxx.16.1 - xxx.xxx.17.254
We attempted to define /23 on Address instead, but that is not allowed.
I work for NASA GSFC and we're having to proceed without network and
then manually edit /etc/netplan/*.yaml after install.
If this is an error on our part, can you please clarify what we were
supposed to enter for subnet? Since Subnet line requires an entry in
CIDR form with error "should be in CIDR form (xx.xx.xx.xx/yy)"
Manual network config works fine with:
# This is the network config written by 'subiquity'
network:
version: 2
renderer: networkd
ethernets:
enp49s0f1:
dhcp4: no
addresses:
- xxx.xxx.17.114/23
gateway4: xxx.xxx.16.1
nameservers:
addresses: [xxx.xxx.10.134, xxx.xxx.50.17]
**IPs redacted for security purposes
** Affects: subiquity (Ubuntu)
Importance: Undecided
Status: New
** Attachment added: "Subnet calculation error"
https://bugs.launchpad.net/bugs/1910155/+attachment/5449278/+files/Ubuntu-installer-subnet-error.jpg
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https://bugs.launchpad.net/bugs/1910155
Title:
Installation manual network config fails with "x.x.x.x is not in
contained in x.x.x.x/yy"
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