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Published 1 month ago • verified publisher icon armbian

[Bug]: Inconsistency between minimal and server images for ipv6 dhcp

Open stephengraf opened this issue 1 month ago • 0 comments

What happened?

The ipv6 address that is generated when starting a minimal image is different than when staring a server image even though both are supposed to use DHCP. My DHCP is set to use a static ip based on the macaddress.

The minimal image provides the correct address but the server image provides something different.

On a server image after using armbian-configure to set a static ip and then modifying the netplan to set DHCP for ipv6 to true I get the proper ipv6 ip based on the macaddress.

On a server image "ip a" after the initial system setup:

2: end0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000 link/ether 02:81:a9:40:11:e6 brd ff:ff:ff:ff:ff:ff altname enx0281a94011e6 inet 192.168.1.70/24 brd 192.168.1.255 scope global dynamic noprefixroute end0 valid_lft 43182sec preferred_lft 43182sec inet6 2001:569:5143:f100:4b96:5d34:7419:608f/64 scope global dynamic noprefixroute valid_lft 14603sec preferred_lft 14303sec inet6 fd05:ce26:d593:0:b7b:3450:b314:95ad/64 scope global noprefixroute valid_lft forever preferred_lft 604783sec inet6 fe80::6dcf:e60f:808a:a57b/64 scope link noprefixroute valid_lft forever preferred_lft forever

On a server image "ip a" after configuring netplan:

: end0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000 link/ether 02:81:a9:40:11:e6 brd ff:ff:ff:ff:ff:ff altname enx0281a94011e6 inet 192.168.1.81/24 brd 192.168.1.255 scope global noprefixroute end0 valid_lft forever preferred_lft forever inet6 2001:569:5143:f100:81:a9ff:fe40:11e6/64 scope global dynamic noprefixroute valid_lft 13811sec preferred_lft 13511sec inet6 fd05:ce26:d593:0:81:a9ff:fe40:11e6/64 scope global noprefixroute valid_lft forever preferred_lft 604378sec inet6 fe80::81:a9ff:fe40:11e6/64 scope link nopre

How to reproduce?

Set up a DHPC server to use static ip based on macaddress. Start up new images of a minimal and server systems and look at ips for ipv6 that are generated.

putty.txt for server image armbianmonitor -u` https://paste.armbian.com/fokeyixunu

Using debian trixie (not in OS selection below!)

On which OS are you observing this problem? (for easier diagnosis please provide logs with armbianmonitor -u)

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stephengraf avatar Dec 01 '25 19:12 stephengraf