Fedora 27 - Unable to parse ip. Please debug

[zeleanon]

IP not displayed properly on Fedora 27

Enhancement Request

When using FireMotD on Fedora 27, the ip address is not displayed but instead the error message in the title. This appears to be due to a newer version of "ip", which on my machine shows uid at the end of line instead of the IP address, making it not match the criteria and hence it displays the error.

A change on line 221 of /usr/local/bin/FireMotD seems to fix that. HostIp="$(${IpPath} route get 8.8.8.8 | head -1 | cut -d" " -f7)"

I've substituted -f7 in place of the -f8 in cut. After running FireMotD -S, it appears to work. I'm not sure if anyone wants to use this to make a Fedora 27 fork, but I don't have the knowledge or time right now. Just thought I'd share my solution. Thanks.

• FireMotD version: v9.02.180225
• OS distribution: Fedora
• OS version: 27

Expected Behavior: Display IP

Actual Behavior: Unable to parse ip. Please debug.

How to reproduce Behavior: Install on Fedora 27, run script

[zeleanon]

Actually, as a side note, this appears to be an issue on Cent as well. If you run the command in shell, ip route get 8.8.8.8 | head -1 | cut -d" " -f8, you'll get nothing on my up to date CentOS box. f7 gets the ip. The only reason it works on Cent is because the other command, ip route get 8.8.8.8 | head -1 | awk -F' ' '{print $(NF)}' does work. On Fedora, it returns my uid. Not sure how to fix that with awk though, so I fixed cut.

[dimon222]

If this is only about ip version, then we can theoretically look after implementing something similar to free adjustment in here

Do you mind mentioning versions of your ip tool on both of your OS? Just type ip -V

I checked on my Debian machines, and all got so far: iproute2-ss140804 This case is working me: HostIp="$(${IpPath} route get 8.8.8.8 | head -1 | awk -F' ' '{print $(NF)}')"

[zeleanon]

CentOS 7: iproute2-ss130716 Output of ip route get 8.8.8.8 | head -1:

8.8.8.8 via 192.168.0.1 dev kbem1 src 192.168.0.100

Fedora 27: iproute2-ss180129 Output:

8.8.8.8 via 192.168.0.1 dev enp2s0 src 192.168.0.127 uid 1001

[zeleanon]

Output with awk version:

CentOS: 192.168.0.100

Fedora 27: 1001 (my uid)

[IamUSER]

This seems to be a better fit on Kali/Debian with iproute2-ss180402 HostIp="$(${IpPath} route get 8.8.8.8 | head -1 | cut -d" " -f7)"

This gives me "uid" as a result. HostIp="$(${IpPath} route get 8.8.8.8 | head -1 | cut -d" " -f8)"

Just adding to the thread since I encountered the issue on my RPi project.

[IamUSER]

I'm also a fan of this option for the public IP. HostIp="$(curl -s ipecho.net/plain; echo)"

[willemdh]

@IamUSER It's not always ideal to check ip through external website. I prefer the ip route option. I did a fix which hopefully makes it more stable for all distributions.

@zeleanon Please let me know if https://github.com/OutsideIT/FireMotD/pull/105 works for you.

[willemdh]

I'm closing this issue, please try latest version. If #108 doesn't work, met me know and I'll reopen.