my company provides some network tweaking scripts to update the WSL network stack to work together with our internal network / corporate proxy / etc.

The part of the (powerscript), which is problematic in my case is here:

Write-Host "Attach static ip to the wsl2 interface"

    $ips = (wsl -d $wsl_distro -u root bash -c "ip addr show eth0 | grep inet | cut -d ' ' -f6").Split("`n")
    $broadcasts = (wsl -d $wsl_distro -u root bash -c "ip addr show eth0 | grep inet | cut -d ' ' -f8").Split("`n")
    # Remove all IPv4 addresses
    for ($i = 0; $i -lt $ips.length; $i++) {
        $current_ip = $ips[$i]
        # Don't touch IPv6
        if ($current_ip -notlike "*:*") {
            # If it's not the static WSL IP, it's the currently generated dynamic IP
            if ($current_ip.Split("/")[0] -ne $wsl_ip) {
                $dynamic_ip = $current_ip
                $dynamic_broadcast = $broadcasts[$i]
            }
            wsl -d $wsl_distro -u root ip addr del $current_ip dev eth0
        }
    }

This line here

 wsl -d $wsl_distro -u root ip addr del $current_ip dev eth0

gives me this error

RTNETLINK answers: Permission denied

A dedicated call gives me the same, of course (e.g

ip a del  169.254.228.65/32 dev eth0
RTNETLINK answers: Permission denied

)

Here are some system data:

ip a
2: eth0: <> mtu 1500 group default qlen 1
    link/ether 2c:58:b9:bf:89:f7
    inet 169.254.228.65/16 brd 169.254.255.255 scope global dynamic
       valid_lft forever preferred_lft forever
    inet6 fe80::e0fe:af6f:2cc2:4c2e/64 scope link dynamic
       valid_lft forever preferred_lft forever
14: eth1: <BROADCAST,MULTICAST,UP> mtu 1500 group default qlen 1
    link/ether 2c:58:b9:bf:89:f8
    inet 192.168.1.179/24 brd 192.168.1.255 scope global dynamic
       valid_lft 861500sec preferred_lft 861500sec
1: lo: <LOOPBACK,UP> mtu 1500 group default qlen 1
    link/loopback 00:00:00:00:00:00
    inet 127.0.0.1/8 brd 127.255.255.255 scope global dynamic
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host dynamic
       valid_lft forever preferred_lft forever
18: wifi0: <> mtu 1500 group default qlen 1
    link/ieee802.11 f8:fe:5e:4b:ae:d3
    inet 169.254.114.60/16 brd 169.254.255.255 scope global dynamic
       valid_lft forever preferred_lft forever
    inet6 fe80::6413:12e6:8c8c:6e32/64 scope link dynamic
       valid_lft forever preferred_lft forever
6: wifi1: <> mtu 1500 group default qlen 1
    link/ieee802.11 f8:fe:5e:4b:ae:d4
    inet 169.254.245.78/16 brd 169.254.255.255 scope global dynamic
       valid_lft forever preferred_lft forever
    inet6 fe80::2eb5:6676:ff9:b064/64 scope link dynamic
       valid_lft forever preferred_lft forever
19: wifi2: <> mtu 1500 group default qlen 1
    link/ieee802.11 fa:fe:5e:4b:ae:d3
    inet 169.254.1.94/16 brd 169.254.255.255 scope global dynamic
       valid_lft forever preferred_lft forever
    inet6 fe80::feab:6b73:55ca:a6a0/64 scope link dynamic
       valid_lft forever preferred_lft forever
15: eth2: <BROADCAST,MULTICAST,UP> mtu 1390 group default qlen 1
    link/ether 00:05:9a:3c:7a:00
    inet 10.130.35.250/18 brd 10.130.63.255 scope global dynamic
       valid_lft forever preferred_lft forever

distribution:

cat /etc/issue
Ubuntu 22.04.1 LTS

Anyone has an idea what I could try ?

Many thanks and Greetings,

JP