After removing it, purging and reinstalling regular iptables, everything seems to be working again.

Thanks for your help and sorry for the troubles.

* apt-get update
* apt-get install iptables

The problems remains unchanged.

ok. Why did you install iptables from backports?

Did I? How would I do it differently? As far as I can tell I just installed iptables when first installing Devuan jessie and them upgraded to ascii.

You do know that the last image was 116 Mb, I suppose.

I bet it was 11.6 Mb but I understand the inconvenience.

I'm having some dificulties doing so as the affected machine is my server/router which has no X so my desktop machines have no internet connection if I connect them in my internal network. All info I'm passing is going through my cel phone so it's hard to capture the text. That's why I'm sending photos...

I'm not sure. How can I found out?

Yes, I do.

Also yes.

You do know that the last image was 116 Mb, I suppose. Please use the text copied into the posts, rather. You can pipe output to file, or use script to get a typescript file.

Anyhow, I'm guesing your iptables (v1.6.1) is from ascii-backports; where's your kernel from?
Do you have the /lib/modules/$(uname -r) sub tree with kernel modules?
Specifically do you have /lib/modules/$(uname -r)/kernel/net/ipv4/netfilter/ipt_MASQUERADE.ko, which is the module concerned?

I don't know what pin preferences are. Can you tell me where I can find them?

When I upgraded to ascii I was using pkgmaster.devuan.org in my sources.list. Changing to deb.devuan.org didn't produce any new results.

a) what's your sources.list (and sources.list.d/*) ?

b) what's your pin preferences

c) what does "apt-get -s dist-upgrade" say (the "-s" means "simulate", i.e., "just analyze what would be done, but don't do it")

The answers to your other questions: https://cdn.pbrd.co/images/HkYd1CW.jpg

I believe iptables is working on Devuan ascii. That's what makes my issue even more strange. I had a regular devuan jessie installed from scratch. The only "difference" I can see in my system was that ia wasn't completely updated (jessie wise) when I upgraded do ascii.

Ideas?

which is the issue, exactly? Which error message are you seeing? Which kernel version are you using?  On which platform? (no need to say that I am using some or all of those iptables modules in many ASCII installations, without problems, and I am sure I am not alone here otherwise we would have had thousands of users complaining here and on DNG).

Just upgraded to ascii. Iptables has no extensions: multiport, mark, MASQUERADE. Iptables can't find any.

I have already removed and reinstalled iptables but the issue remains unchanged.

Ideas on how to further debug this issue?