Just my thoughts - there are situations where rp_filter is not sufficient, and it was not clear to me how to do this cleanly with the zone firewall, so I ended up hacking a few iptables commands in rc.local instead.

I need to modify the file(/etc/swanctl/swanctl.conf) manually, from emote_ts = dynamic[gre] to remote_ts = 0.0.0.0/0[gre].

I test that issue on 1.2.5. but not work

You can consider submitting a PR request in a rolling branch that has requested a merge.

I'm still seeing this in VyOS 1.3-rolling-202004170117

Pull Request: https://github.com/vyos/ppp-upstream/pull/2

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8597

I send a pull request to fix it:

We took other steps that allows us to take the image back to a manageable size, and this task lost its immediate relevance.

I think we can close this task.
Nothing like that has happened in the last few months.

This is confusing. While NTP used to work (listen on all interfaces) without any listen-address set, now it doesn't. This means any old config without listen-address set will now have a non-working NTP without any warning. There was no migration script to migrate the old behavior to the new. ntp should have a mandatory listen-address if this new behavior is kept.

Hello!
Please also add "single-session" to
set service pppoe-server ppp-options

Do you know what the outcome of this old task was?

While "interface ignore wildcard" configured, we got:

ntpq -c lpeer
 remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
 10.255.0.1      .INIT.          16 u    -   64    0    0.000    0.000   0.000

Yes, this _was_ still a problem but the workaround solves the issue for
me. I've been able to upgrade the 1.1.8 instances to 1.2.3 after adding
this extra interface route.

You are absolutely right. Was a stressful morning sorting this out, thanks for the response.

@LBegnaud if I read the source correct the command set vpn ipsec options disable-route-autoinstall is what you are looking for, it was implemented in T71.