We need to prevent using the same key for mGRE tunnels, otherwise, we get error
```
set interfaces tunnel tun1 encapsulation gre
set interfaces tunnel tun1 local-ip '0.0.0.0'
set interfaces tunnel tun1 address 10.10.10.1/30
set interfaces tunnel tun1 parameters ip key '1'
set interfaces tunnel tun1 multicast 'enable'
set interfaces tunnel tun2 encapsulation gre
set interfaces tunnel tun2 local-ip '0.0.0.0'
set interfaces tunnel tun2 address 10.255.10.1/30
set interfaces tunnel tun2 parameters ip key
'2''1'
set interfaces tunnel tun2 multicast 'enable'
```
On commit
```
vyos@R2# commit
[ interfaces tunnel tun2 ]
VyOS had an issue completing a command.
We are sorry that you encountered a problem while using VyOS.
There are a few things you can do to help us (and yourself):
- Make sure you are running the latest version of the code available at
https://downloads.vyos.io/rolling/current/amd64/vyos-rolling-latest.iso
- Consult the forum to see how to handle this issue
https://forum.vyos.io
- Join our community on slack where our users exchange help and advice
https://vyos.slack.com
When reporting problems, please include as much information as possible:
- do not obfuscate any data (feel free to contact us privately if your
business policy requires it)
- and include all the information presented below
Report Time: 2020-09-24 12:46:35
Image Version: VyOS 1.3-rolling-202009210118
Release Train: equuleus
Built by:
[email protected]
Built on: Mon 21 Sep 2020 01:18 UTC
Build UUID: 80edfc66-86d4-46ad-b93a-dbebe39040a8
Build Commit ID: d571b383797719
Architecture: x86_64
Boot via: installed image
System type: KVM guest
Hardware vendor: QEMU
Hardware model: Standard PC (i440FX + PIIX, 1996)
Hardware S/N:
Hardware UUID: 32e90bec-c310-4ae1-b9b4-2791db77df95
Traceback (most recent call last):
File "/usr/libexec/vyos/conf_mode/interfaces-tunnel.py", line 719, in <module>
apply(c)
File "/usr/libexec/vyos/conf_mode/interfaces-tunnel.py", line 669, in apply
tunnel = kls(ifname, **config)
File "/usr/lib/python3/dist-packages/vyos/ifconfig/tunnel.py", line 93, in __init__
super().__init__(ifname, **config)
File "/usr/lib/python3/dist-packages/vyos/ifconfig/interface.py", line 235, in __init__
self._create()
File "/usr/lib/python3/dist-packages/vyos/ifconfig/tunnel.py", line 99, in _create
self._cmd('{} {}'.format(self.create.format(**self.config), options))
File "/usr/lib/python3/dist-packages/vyos/ifconfig/control.py", line 51, in _cmd
return cmd(command, self.debug)
File "/usr/lib/python3/dist-packages/vyos/util.py", line 179, in cmd
raise OSError(code, feedback)
PermissionError: [Errno 1] failed to run command: ip tunnel add tun2 mode gre local 0.0.0.0 ttl 255 tos inherit key 1
returned:
exit code: 1
noteworthy:
cmd 'ip tunnel add tun2 mode gre local 0.0.0.0 ttl 255 tos inherit key 1'
returned (out):
returned (err):
add tunnel "gre0" failed: File exists
[[interfaces tunnel tun2]] failed
Commit failed
[edit]
```