02.06.2025 16:07, daggs wrote:
Greetings,

I have a qemu vm which runs a systemd based buildroot image, the vm's nic is 
virtio, if I configure systemd to auto start the nic, I get two ips for the 
only nic on the system, a valid one and in invalid one.
in this case, I can only connect to local lan but not outside of the last,

Show

ip r

Multiple addresses on a interface is not something unusual.

I once were able to get to a situation where only the valid ip is set and 
tested outside connection at it worked.
here is the output of ip a:

$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue 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
     inet6 ::1/128 scope host noprefixroute
        valid_lft forever preferred_lft forever
2: enp1s0: <BROADCAST,MULTICAST,UP,LOWER_UP8000> mtu 1500 qdisc fq_codel qlen 
1000
     link/ether xx:xx:xx:xx:xx:xx brd ff:ff:ff:ff:ff:ff
     inet 192.168.0.10/24 brd 192.168.0.255 scope global dynamic enp1s0
        valid_lft 40422sec preferred_lft 40422sec
     inet 169.254.39.180/16 brd 169.254.255.255 scope global enp1s0
        valid_lft forever preferred_lft forever
     inet6 xxxx::xxxx:xx:xxxx:xxxx/64 scope link
        valid_lft forever preferred_lft forever
3: sit0@NONE: <NOARP> mtu 1480 qdisc noop qlen 1000
     link/sit 0.0.0.0 brd 0.0.0.0

$ cat /etc/systemd/network/enp1s0.network
[Match]
Name=enp1s0
[Network]
DHCP=ipv4

I'm no sure this is a systemd bug as I saw it when I tried a non systemd based 
env, so I'd like to try and prevent such allocation so the system will work 
until I can properly solve it.
is it possible?

Thanks

Dagg

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