<![CDATA[Bad argument `eth0' openvpn after update]]>Is anyone else getting a "Bad argument `eth0' openvpn" after updating OpenVPN with the IPv6 update?

]]>https://forum.cloudron.io/topic/7090/bad-argument-eth0-openvpn-after-updateRSS for NodeThu, 16 Apr 2026 17:24:36 GMTWed, 25 May 2022 12:24:50 GMT60<![CDATA[Reply to Bad argument `eth0' openvpn after update on Thu, 26 May 2022 16:32:54 GMT]]>Would be good if you guys put a note on which clients have this issue. See https://community.openvpn.net/openvpn/wiki/IPv6#Clientissues for OpenVPN/IPv6 issues.

I mostly only tested only on Linux and it works there.

]]>https://forum.cloudron.io/post/48635https://forum.cloudron.io/post/48635Thu, 26 May 2022 16:32:54 GMT<![CDATA[Reply to Bad argument `eth0' openvpn after update on Thu, 26 May 2022 20:18:01 GMT]]>@JLX89 me too, everything is great but my ipv6 still show as Verizon business. I want see if that ipv6 can blocked or mask it up something .

]]>https://forum.cloudron.io/post/48634https://forum.cloudron.io/post/48634Thu, 26 May 2022 20:18:01 GMT<![CDATA[Reply to Bad argument `eth0' openvpn after update on Thu, 26 May 2022 15:31:38 GMT]]>@ApplegateR said in Bad argument &#x60;eth0' openvpn after update:

@JLX89 yes for me I just don't want it being leak ipv6 on data so still work on it..

Yes, I agree -- so far I did some testing and used https://ipleak.net to see if there were any issues and didn't see any.

]]>https://forum.cloudron.io/post/48622https://forum.cloudron.io/post/48622Thu, 26 May 2022 15:31:38 GMT<![CDATA[Reply to Bad argument `eth0' openvpn after update on Thu, 26 May 2022 15:03:15 GMT]]>@JLX89 yes for me I just don't want it being leak ipv6 on data so still work on it..

]]>https://forum.cloudron.io/post/48620https://forum.cloudron.io/post/48620Thu, 26 May 2022 15:03:15 GMT<![CDATA[Reply to Bad argument `eth0' openvpn after update on Thu, 26 May 2022 12:34:12 GMT]]>@ApplegateR Thanks! Yes, the app will now start without issue, but it's not pushing the IPv6 address -- which isn't a huge issue for us at the moment.

]]>https://forum.cloudron.io/post/48616https://forum.cloudron.io/post/48616Thu, 26 May 2022 12:34:12 GMT<![CDATA[Reply to Bad argument `eth0' openvpn after update on Wed, 25 May 2022 23:20:08 GMT]]>@ApplegateR switch to data on my phone and it still get ipv6 however on wifi does not show ipv6

]]>https://forum.cloudron.io/post/48601https://forum.cloudron.io/post/48601Wed, 25 May 2022 23:20:08 GMT<![CDATA[Reply to Bad argument `eth0' openvpn after update on Wed, 25 May 2022 23:09:23 GMT]]>@ApplegateR

In openvpn.conf

push "redirect-gateway def1 bypass-dhcp"

Not showing ipv6 so I added second line below that. Let see test see if it works.

push "redirect-gateway def1 bypass-dhcp"
push "redirect-gateway def1 ipv6 bypass-dhcp"

]]>https://forum.cloudron.io/post/48599https://forum.cloudron.io/post/48599Wed, 25 May 2022 23:09:23 GMT<![CDATA[Reply to Bad argument `eth0' openvpn after update on Wed, 25 May 2022 23:05:14 GMT]]>@girish i on phone galaxy but I notice my Linux wasn't show ipv6 which is working great.

]]>https://forum.cloudron.io/post/48597https://forum.cloudron.io/post/48597Wed, 25 May 2022 23:05:14 GMT<![CDATA[Reply to Bad argument `eth0' openvpn after update on Wed, 25 May 2022 19:40:42 GMT]]>@ApplegateR The openvpn.conf should have push "redirect-gateway def1 ipv6 bypass-dhcp" . If it does, then it's probably a client side thing. Are you on a Mac ? I only tested this the setting on linux.

]]>https://forum.cloudron.io/post/48582https://forum.cloudron.io/post/48582Wed, 25 May 2022 19:40:42 GMT<![CDATA[Reply to Bad argument `eth0' openvpn after update on Wed, 25 May 2022 19:31:52 GMT]]>@girish okay it disabled and I did restart the app and I still get leak ipv6. So I guessing something configure is missing that bypass ipv6 I think.. but will look more into it 🙂

]]>https://forum.cloudron.io/post/48580https://forum.cloudron.io/post/48580Wed, 25 May 2022 19:31:52 GMT<![CDATA[Reply to Bad argument `eth0' openvpn after update on Wed, 25 May 2022 19:26:19 GMT]]>@ApplegateR said in Bad argument &#x60;eth0' openvpn after update:

If I try switch to public on ipv6 I still get error this message

Currently, the IPv6 detection is only done on the app startup. So, if you add/remove IPv6 on the fly, you have to restart the app.

]]>https://forum.cloudron.io/post/48578https://forum.cloudron.io/post/48578Wed, 25 May 2022 19:26:19 GMT<![CDATA[Reply to Bad argument `eth0' openvpn after update on Wed, 25 May 2022 19:22:02 GMT]]>@ApplegateR great work. My server disabled ipv6. And it still detected my phone tower ipv6 instead cloudron server was it because my cloudron disabled ipv6?

If I try switch to public on ipv6 I still get error this message

AddressUnable to detect IPv6.
API server (ipv6.api.cloudron.io) unreachable

]]>https://forum.cloudron.io/post/48577https://forum.cloudron.io/post/48577Wed, 25 May 2022 19:22:02 GMT<![CDATA[Reply to Bad argument `eth0' openvpn after update on Wed, 25 May 2022 18:59:28 GMT]]>@girish alright going to test that

]]>https://forum.cloudron.io/post/48574https://forum.cloudron.io/post/48574Wed, 25 May 2022 18:59:28 GMT<![CDATA[Reply to Bad argument `eth0' openvpn after update on Wed, 25 May 2022 18:58:34 GMT]]>@ApplegateR Your IPv6 should also be hidden now (only if your server has IPv6 though). You can use https://www.whatismyip.com/ or https://www.iplocation.net/find-ip-address

]]>https://forum.cloudron.io/post/48573https://forum.cloudron.io/post/48573Wed, 25 May 2022 18:58:34 GMT<![CDATA[Reply to Bad argument `eth0' openvpn after update on Wed, 25 May 2022 18:56:51 GMT]]>@girish it does fixed, thank you now I am testing to make sure.

]]>https://forum.cloudron.io/post/48572https://forum.cloudron.io/post/48572Wed, 25 May 2022 18:56:51 GMT<![CDATA[Reply to Bad argument `eth0' openvpn after update on Wed, 25 May 2022 18:54:57 GMT]]>@ApplegateR Ah! Sorry, I know what the problem is. There is a bug in the update.

Can you please add this line in /app/data/openvpn.conf using the File manager:

server-ipv6 fd42:feed:feed:feed::/64

That should fix it. I will make a new package in the meantime.

]]>https://forum.cloudron.io/post/48571https://forum.cloudron.io/post/48571Wed, 25 May 2022 18:54:57 GMT<![CDATA[Reply to Bad argument `eth0' openvpn after update on Wed, 25 May 2022 18:53:25 GMT]]>@ApplegateR Does your server have IPv6 ?

Maybe the auto detection logic in the package is wrong. I did test all the combinations (ubuntu+ipv6 availability+iptables/nftables) but looks like I missed something.

]]>https://forum.cloudron.io/post/48567https://forum.cloudron.io/post/48567Wed, 25 May 2022 18:53:25 GMT<![CDATA[Reply to Bad argument `eth0' openvpn after update on Wed, 25 May 2022 18:51:50 GMT]]>@girish
Platform versionv7.2.1 (Ubuntu 20.04.4 LTS)

]]>https://forum.cloudron.io/post/48566https://forum.cloudron.io/post/48566Wed, 25 May 2022 18:51:50 GMT<![CDATA[Reply to Bad argument `eth0' openvpn after update on Wed, 25 May 2022 16:44:37 GMT]]>@ApplegateR @JLX89 Can you tell me which Ubuntu version you are on?

Also, I assume both of you are already on 7.2.1 ?

]]>https://forum.cloudron.io/post/48539https://forum.cloudron.io/post/48539Wed, 25 May 2022 16:44:37 GMT<![CDATA[Reply to Bad argument `eth0' openvpn after update on Wed, 25 May 2022 16:40:53 GMT]]>@ApplegateR , we might want to spin this off into a support topic. @girish Can we get this split into a new topic?

]]>https://forum.cloudron.io/post/48538https://forum.cloudron.io/post/48538Wed, 25 May 2022 16:40:53 GMT<![CDATA[Reply to Bad argument `eth0' openvpn after update on Wed, 25 May 2022 16:32:38 GMT]]>@ApplegateR updated automatically yesterday and it can't run it was not respond.

]]>https://forum.cloudron.io/post/48536https://forum.cloudron.io/post/48536Wed, 25 May 2022 16:32:38 GMT<![CDATA[Reply to Bad argument `eth0' openvpn after update on Wed, 25 May 2022 16:32:11 GMT]]>@girish Screenshot_20220525-093128_Chrome.jpg

I getting this error...

]]>https://forum.cloudron.io/post/48535https://forum.cloudron.io/post/48535Wed, 25 May 2022 16:32:11 GMT