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update IP on shell after change IP of LXC #223

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opened 2026-02-04 17:13:01 +03:00 by OVERLORD · 4 comments
OVERLORD commented 2026-02-04 17:13:01 +03:00
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Originally created by @gianlucaf81 on GitHub (Dec 28, 2024).

✅ Have you read and understood the above guidelines?

yes

📜 What is the name of the script you are using?

Jellyfin but it's the same for everyone

📂 What was the exact command used to execute the script?

bash -c "$(wget -qLO - https://github.com/community-scripts/ProxmoxVE/raw/main/ct/jellyfin.sh)"

📝 Provide a clear and concise description of the issue.

if I change the IP of the container when starting the shell I don't get the string with the updated IP.

⚙️ What settings are you using?

  • Default Settings
  • Advanced Settings

🖥️ Which Linux distribution are you using?

Debian 12

🔄 Steps to reproduce the issue.

  1. do any lxc with DHCP
  2. try to change the ip of the lxc
  3. restart the container

❌ Paste the full error output (if available).

`jellyfin login: root (automatic login)

Jellyfin LXC Container
🌐 Provided by: community-scripts ORG | GitHub: https://github.com/community-scripts/ProxmoxVE

🖥️   OS: Debian GNU/Linux - Version: 12
🏠   Hostname: jellyfin
💡   IP Address: 192.168.1.141

Last login: Sat Dec 28 08:54:16 CET 2024 on tty1
root@jellyfin:# ip address
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
2: eth0@if14: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether bc:24:11:5f:26:12 brd ff:ff:ff:ff:ff:ff link-netnsid 0
inet 192.168.1.101/24 brd 192.168.1.255 scope global eth0
valid_lft forever preferred_lft forever
root@jellyfin:# `

🖼️ Additional context (optional).

image

Originally created by @gianlucaf81 on GitHub (Dec 28, 2024). ### ✅ Have you read and understood the above guidelines? yes ### 📜 What is the name of the script you are using? Jellyfin but it's the same for everyone ### 📂 What was the exact command used to execute the script? bash -c "$(wget -qLO - https://github.com/community-scripts/ProxmoxVE/raw/main/ct/jellyfin.sh)" ### 📝 Provide a clear and concise description of the issue. if I change the IP of the container when starting the shell I don't get the string with the updated IP. ### ⚙️ What settings are you using? - [X] Default Settings - [ ] Advanced Settings ### 🖥️ Which Linux distribution are you using? Debian 12 ### 🔄 Steps to reproduce the issue. 1. do any lxc with DHCP 2. try to change the ip of the lxc 3. restart the container ### ❌ Paste the full error output (if available). `jellyfin login: root (automatic login) Jellyfin LXC Container 🌐 Provided by: community-scripts ORG | GitHub: https://github.com/community-scripts/ProxmoxVE 🖥️ OS: Debian GNU/Linux - Version: 12 🏠 Hostname: jellyfin 💡 IP Address: 192.168.1.141 Last login: Sat Dec 28 08:54:16 CET 2024 on tty1 root@jellyfin:~# ip address 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever 2: eth0@if14: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000 link/ether bc:24:11:5f:26:12 brd ff:ff:ff:ff:ff:ff link-netnsid 0 inet 192.168.1.101/24 brd 192.168.1.255 scope global eth0 valid_lft forever preferred_lft forever root@jellyfin:~# ` ### 🖼️ Additional context (optional). ![image](https://github.com/user-attachments/assets/c01bd0f8-41dc-43ac-b0de-ce973e58a74a)
OVERLORD added the not a script issue label 2026-02-04 17:13:01 +03:00
OVERLORD commented 2026-02-04 17:13:08 +03:00
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@oOStroudyOo commented on GitHub (Dec 28, 2024):

I don't believe it's possible to add anything dynamic in the motd (message of the day).

I think this would require a Cron job at every reboot to update the motd with the current IP address.

@oOStroudyOo commented on GitHub (Dec 28, 2024): I don't believe it's possible to add anything dynamic in the motd (message of the day). I think this would require a Cron job at every reboot to update the motd with the current IP address.
OVERLORD commented 2026-02-04 17:13:13 +03:00
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@michelroegl-brunner commented on GitHub (Dec 28, 2024):

Exactly as Stroud said above. No script issue.

@michelroegl-brunner commented on GitHub (Dec 28, 2024): Exactly as Stroud said above. No script issue.
OVERLORD commented 2026-02-04 17:13:19 +03:00
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@oOStroudyOo commented on GitHub (Dec 28, 2024):

Rather than it being raised as an issue, you could raise this as an idea in discussion.

It wouldn't take somebody too long to create a helper-script for dynamic IP Cron jobs for the motd.

@oOStroudyOo commented on GitHub (Dec 28, 2024): Rather than it being raised as an issue, you could raise this as an idea in discussion. It wouldn't take somebody too long to create a helper-script for dynamic IP Cron jobs for the motd.
OVERLORD commented 2026-02-04 17:13:22 +03:00
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@akhdanfadh commented on GitHub (Jan 5, 2025):

For a debian/ubuntu distribution, remove /etc/motd and add this script to /etc/update-motd.d/ as 01-tteck for example. Then make it executable, e.g., chmod +x /etc/update-motd.d/01-tteck. Reboot and you'll see.

#!/bin/sh

OS_NAME=$(grep '^NAME=' /etc/os-release | cut -d '"' -f 2)
OS_VERSION=$(grep '^VERSION_ID=' /etc/os-release | cut -d '"' -f 2)
HOSTNAME=$(hostname)
IP_ADDRESS=$(hostname -I | awk '{print $1}')

echo ""
echo "\033[1mTraefik LXC Container\033[0m"
echo "    🌐  \033[0m\033[33m Provided by: \033[1;92mcommunity-scripts ORG \033[33m| GitHub: \033[1;92mhttps://github.com/community-scripts/ProxmoxVE\033[0m"
echo ""
echo "    🖥️  \033[0m\033[33m OS: \033[1;92m${OS_NAME} - Version: ${OS_VERSION}\033[0m"
echo "    🏠  \033[0m\033[33m Hostname: \033[1;92m${HOSTNAME}\033[0m"
echo "    💡  \033[0m\033[33m IP Address: \033[1;92m${IP_ADDRESS}\033[0m"
@akhdanfadh commented on GitHub (Jan 5, 2025): For a debian/ubuntu distribution, remove `/etc/motd` and add this script to `/etc/update-motd.d/` as `01-tteck` for example. Then make it executable, e.g., `chmod +x /etc/update-motd.d/01-tteck`. Reboot and you'll see. ```bash #!/bin/sh OS_NAME=$(grep '^NAME=' /etc/os-release | cut -d '"' -f 2) OS_VERSION=$(grep '^VERSION_ID=' /etc/os-release | cut -d '"' -f 2) HOSTNAME=$(hostname) IP_ADDRESS=$(hostname -I | awk '{print $1}') echo "" echo "\033[1mTraefik LXC Container\033[0m" echo " 🌐 \033[0m\033[33m Provided by: \033[1;92mcommunity-scripts ORG \033[33m| GitHub: \033[1;92mhttps://github.com/community-scripts/ProxmoxVE\033[0m" echo "" echo " 🖥️ \033[0m\033[33m OS: \033[1;92m${OS_NAME} - Version: ${OS_VERSION}\033[0m" echo " 🏠 \033[0m\033[33m Hostname: \033[1;92m${HOSTNAME}\033[0m" echo " 💡 \033[0m\033[33m IP Address: \033[1;92m${IP_ADDRESS}\033[0m" ```
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Reference: starred/ProxmoxVE#223
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