Interface ethernet eth4: does not exist

As the title says. After removing IP addresses from the interface in order to use a different provider the interface does not exist anymore.
PLease let me know how to solve it. It is our internet connection.

Hello,
It sounds like maybe the interface was accidentally deleted instead of just the address statement?
You should be able to roll back to a previous config by using the rollback function. Keep in mind, it will reboot VyOS.
You can also use compare to see what happened with a previously saved config.

Hello @petr, which VyOS version?
I try to reproduce but without result

vyos@vyos# set interfaces ethernet eth0 address 100.64.0.1/24
[edit]
vyos@vyos# commit
[edit]
vyos@vyos# save 
Saving configuration to '/config/config.boot'...
Done
[edit]
vyos@vyos# delete interfaces ethernet eth0
[edit]
vyos@vyos# commit
[edit]
vyos@vyos# run show interfaces 
Codes: S - State, L - Link, u - Up, D - Down, A - Admin Down
Interface        IP Address                        S/L  Description
---------        ----------                        ---  -----------
eth0             -                                 A/D  
eth1             -                                 u/u  
eth2             -                                 u/u  
eth3             -                                 u/u  
lo               127.0.0.1/8                       u/u  
                 ::1/128
[edit]
vyos@vyos# set interfaces ethernet eth0 address 100.64.0.2/24
[edit]
vyos@vyos# commit
[ interfaces ethernet eth0 duplex auto ]
Cannot get current device settings: Operation not supported
  not setting autoneg

[edit]
vyos@vyos# commit
No configuration changes to commit
[edit]
vyos@vyos# run show interfaces 
Codes: S - State, L - Link, u - Up, D - Down, A - Admin Down
Interface        IP Address                        S/L  Description
---------        ----------                        ---  -----------
eth0             100.64.0.2/24                     u/u  
eth1             -                                 u/u  
eth2             -                                 u/u  
eth3             -                                 u/u  
lo               127.0.0.1/8                       u/u  
                 ::1/128
[edit]
vyos@vyos# 

reboot did not help. I still cannot see eth4

@petr I deleted your all messages with your private data for security reasons. If you want to show something, mask private data manually or use stripe-private option, e.g.
show configuration commands | strip-private
Also to better understanding, please use code tags

I think you need to set correct hw-id for eth4 interface and reboot your router again
And one very important note, 1.1.7 is EOL, try to update to 1.1.8 then to 1.3-rolling, or if you have a subscription to 1.2.6-S1.