Comment 11 for bug 1904192

Bfore upgrade:

ubuntu@g-test:~$ sudo ebtables -t nat -N foo
ubuntu@g-test:~$ sudo ebtables -t nat -E foo bar
ebtables v1.8.5 (nf_tables): Chain 'foo' doesn't exists
Try `ebtables -h' or 'ebtables --help' for more information.

Upgrade:
ubuntu@g-test:~$ sudo apt install iptables
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following additional packages will be installed:
  libip4tc2 libip6tc2 libxtables12
Suggested packages:
  firewalld nftables
The following packages will be upgraded:
  iptables libip4tc2 libip6tc2 libxtables12
4 upgraded, 0 newly installed, 0 to remove and 5 not upgraded.
Need to get 498 kB of archives.
After this operation, 0 B of additional disk space will be used.
Do you want to continue? [Y/n] Y
Get:1 http://archive.ubuntu.com/ubuntu groovy-proposed/main amd64 iptables amd64 1.8.5-3ubuntu2.20.10.2 [432 kB]
Get:2 http://archive.ubuntu.com/ubuntu groovy-proposed/main amd64 libxtables12 amd64 1.8.5-3ubuntu2.20.10.2 [28.7 kB]
Get:3 http://archive.ubuntu.com/ubuntu groovy-proposed/main amd64 libip6tc2 amd64 1.8.5-3ubuntu2.20.10.2 [19.1 kB]
Get:4 http://archive.ubuntu.com/ubuntu groovy-proposed/main amd64 libip4tc2 amd64 1.8.5-3ubuntu2.20.10.2 [18.7 kB]
Fetched 498 kB in 0s (1465 kB/s)
(Reading database ... 64660 files and directories currently installed.)
Preparing to unpack .../iptables_1.8.5-3ubuntu2.20.10.2_amd64.deb ...
Unpacking iptables (1.8.5-3ubuntu2.20.10.2) over (1.8.5-3ubuntu2.20.10.1) ...
Preparing to unpack .../libxtables12_1.8.5-3ubuntu2.20.10.2_amd64.deb ...
Unpacking libxtables12:amd64 (1.8.5-3ubuntu2.20.10.2) over (1.8.5-3ubuntu2.20.10.1) ...
Preparing to unpack .../libip6tc2_1.8.5-3ubuntu2.20.10.2_amd64.deb ...
Unpacking libip6tc2:amd64 (1.8.5-3ubuntu2.20.10.2) over (1.8.5-3ubuntu2.20.10.1) ...
Preparing to unpack .../libip4tc2_1.8.5-3ubuntu2.20.10.2_amd64.deb ...
Unpacking libip4tc2:amd64 (1.8.5-3ubuntu2.20.10.2) over (1.8.5-3ubuntu2.20.10.1) ...
Setting up libip4tc2:amd64 (1.8.5-3ubuntu2.20.10.2) ...
Setting up libip6tc2:amd64 (1.8.5-3ubuntu2.20.10.2) ...
Setting up libxtables12:amd64 (1.8.5-3ubuntu2.20.10.2) ...
Setting up iptables (1.8.5-3ubuntu2.20.10.2) ...
Processing triggers for man-db (2.9.3-2) ...
Processing triggers for libc-bin (2.32-0ubuntu3) ...

After upgrade
ubuntu@g-test:~$ sudo ebtables -t nat -N foo2
ubuntu@g-test:~$ sudo ebtables -t nat -E foo2 bar
<works>

Thanks, setting verified!