Bad argument `eth0' openvpn after update

[ApplegateR]

@girish
Platform versionv7.2.1 (Ubuntu 20.04.4 LTS)

[girish]

@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.

[girish]

@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.

[ApplegateR]

@girish it does fixed, thank you now I am testing to make sure.

[girish]

@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

[ApplegateR]

@girish alright going to test that

[ApplegateR]

@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

[girish]

@ApplegateR said in Bad argument `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.

[ApplegateR]

@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

[girish]

@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.

[ApplegateR]

@girish i on phone galaxy but I notice my Linux wasn't show ipv6 which is working great.

[ApplegateR]

@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"

[ApplegateR]

This post is deleted!

[ApplegateR]

@ApplegateR switch to data on my phone and it still get ipv6 however on wifi does not show ipv6

[JLX89]

@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.

[ApplegateR]

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

[JLX89]

@ApplegateR said in Bad argument `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.

[ApplegateR]

@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 .

[girish]

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.