Why Did I Lose DHCP Hostnames After Firmware Upgrade?
Options
Zyxel_Kevin
Posts: 958 
Zyxel Employee
Zyxel Employee
Question: Why did I lose DHCP hostnames after upgrading my USG FLEX device to firmware version uOS 1.30?
Answer:
From firmware version uOS 1.30 onwards, DHCP hostnames must comply with RFC1123 rules, which require the following:
- Hostnames cannot start with a hyphen (-).
- They may only contain letters (A-Z, a-z), numbers (0-9), and hyphens (-).
- Maximum length is 255 characters.
If a previously entered hostname did not comply with these rules, it is possible that the system automatically converted it to a MAC address. This might be why the hostnames were lost or replaced during the firmware upgrade.
Tagged:
0
Categories
- All Categories
- 435 Beta Program
- 2.7K Nebula
- 176 Nebula Ideas
- 117 Nebula Status and Incidents
- 6.1K Security
- 425 USG FLEX H Series
- 298 Security Ideas
- 1.6K Switch
- 78 Switch Ideas
- 1.2K Wireless
- 44 Wireless Ideas
- 6.7K Consumer Product
- 274 Service & License
- 419 News and Release
- 88 Security Advisories
- 31 Education Center
- 10 [Campaign] Zyxel Network Detective
- 4.2K FAQ
- 34 Documents
- 34 Nebula Monthly Express
- 83 About Community
- 89 Security Highlight