I need some help with a rhel 9 nmcli issue...hoping anyone could show me why this might be happening.

So I have disabled several of the ethernet ports by setting them as 'unmanaged' in the keyfiles like so:

/etc/NetworkManager/conf.d/ # cat 99-unmanaged-devices.conf

unmanaged-devices=interface-name:eno1;unmanaged-devices=interface-name:eno2

When I boot eno1 shows as 'unmanaged' as expected, but eno2 shows as 'disconnected':

# nmcli
eno1: unmanaged
        "Intel X540-AT2"
        ethernet (ixgbe), EC:F4:BB:EA:D3:10, hw, sriov, mtu 1500

eno2: disconnected
        "Intel X540-AT2"
        ethernet (ixgbe), EC:F4:BB:EA:D3:12, hw, sriov, mtu 1500

However I'm still getting an IPv6 address on eno1:

# nmcli device show

GENERAL.DEVICE:                         eno1
GENERAL.TYPE:                           ethernet
GENERAL.HWADDR:                         EC:F4:BB:EA:D3:10
GENERAL.MTU:                            1500
GENERAL.STATE:                          10 (unmanaged)
GENERAL.CONNECTION:                     --
GENERAL.CON-PATH:                       --
WIRED-PROPERTIES.CARRIER:               on
IP4.GATEWAY:                            --
IP6.ADDRESS[1]:                         2001:56a:f05e:c300:eef4:bbff:feea:d310/64
IP6.ADDRESS[2]:                         fe80::eef4:bbff:feea:d310/64
IP6.GATEWAY:                            fe80::70a7:41ff:fea6:89c6
IP6.ROUTE[1]:                           dst = 2001:56a:f05e:c300::/64, nh = ::, mt = 256
IP6.ROUTE[2]:                           dst = fe80::/64, nh = ::, mt = 256
IP6.ROUTE[3]:                           dst = ::/0, nh = fe80::70a7:41ff:fea6:89c6, mt = 1024

GENERAL.DEVICE:                         eno2
GENERAL.TYPE:                           ethernet
GENERAL.HWADDR:                         EC:F4:BB:EA:D3:12
GENERAL.MTU:                            1500
GENERAL.STATE:                          30 (disconnected)
GENERAL.CONNECTION:                     --
GENERAL.CON-PATH:                       --
WIRED-PROPERTIES.CARRIER:               on
IP4.GATEWAY:                            --
IP6.GATEWAY:                            --

Only after I use ip link set eno1 down does it release the address, but then it forces eno2 to 'unavailable'

# ip link set eno2 down
# nmcli

eno1: unmanaged
        "Intel X540-AT2"
        ethernet (ixgbe), EC:F4:BB:EA:D3:10, hw, sriov, mtu 1500

eno2: unavailable
        "Intel X540-AT2"
        ethernet (ixgbe), EC:F4:BB:EA:D3:12, hw, sriov, mtu 1500


# nmcli device show

GENERAL.DEVICE:                         eno1
GENERAL.TYPE:                           ethernet
GENERAL.HWADDR:                         EC:F4:BB:EA:D3:10
GENERAL.MTU:                            1500
GENERAL.STATE:                          10 (unmanaged)
GENERAL.CONNECTION:                     --
GENERAL.CON-PATH:                       --
WIRED-PROPERTIES.CARRIER:               off
IP4.GATEWAY:                            --
IP6.GATEWAY:                            --

GENERAL.DEVICE:                         eno2
GENERAL.TYPE:                           ethernet
GENERAL.HWADDR:                         EC:F4:BB:EA:D3:12
GENERAL.MTU:                            1500
GENERAL.STATE:                          20 (unavailable)
GENERAL.CONNECTION:                     --
GENERAL.CON-PATH:                       --
WIRED-PROPERTIES.CARRIER:               off
IP4.GATEWAY:                            --
IP6.GATEWAY:                            --

Any idea what's going on here? It seems that I can't prevent eno1 from getting an IPv6 on every boot.