Unable to find second network interface (too many interfaces)

[Enspist]

HI,

I have a motherboard with 2 NICs on it. a 2.5gb and a 1gb. I have been using the 1gb as my primary NIC since I built the machine and due to the nature of my setup was using the 2.5gb as a way to pass a 2.5 connection between some of my VMs and my PC. I have switched my networking around and now have a 2.5gb firewall so I am attempting to convert the primary NIC to the 2.5gb one however I cannot seem to find which interface it is on. When I run

ip a

it prints out:

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default 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: enp7s0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
    link/ether a8:a1:59:25:1d:79 brd ff:ff:ff:ff:ff:ff
5: eno1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master vmbr0 state UP group default qlen 1000
    link/ether a8:a1:59:25:1d:7b brd ff:ff:ff:ff:ff:ff
    altname enp0s31f6
6: vmbr0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether a8:a1:59:25:1d:7b brd ff:ff:ff:ff:ff:ff
    inet 10.1.1.36/24 scope global vmbr0
       valid_lft forever preferred_lft forever
    inet6 fe80::aaa1:59ff:fe25:1d7b/64 scope link
       valid_lft forever preferred_lft forever
7: veth107i0@if2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master fwbr107i0 state UP group default qlen 1000
    link/ether fe:c3:5c:ee:c9:15 brd ff:ff:ff:ff:ff:ff link-netnsid 0
8: fwbr107i0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether f6:31:c5:5a:6e:1f brd ff:ff:ff:ff:ff:ff
9: fwpr107p0@fwln107i0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master vmbr0 state UP group default qlen 1000
    link/ether 42:a9:1b:3f:20:cd brd ff:ff:ff:ff:ff:ff
10: fwln107i0@fwpr107p0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master fwbr107i0 state UP group default qlen 1000
    link/ether f6:31:c5:5a:6e:1f brd ff:ff:ff:ff:ff:ff
16: tap101i0: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master fwbr101i0 state UNKNOWN group default qlen 1000
    link/ether 62:49:ca:72:16:f8 brd ff:ff:ff:ff:ff:ff
17: fwbr101i0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether d2:60:36:4e:83:cd brd ff:ff:ff:ff:ff:ff
18: fwpr101p0@fwln101i0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master vmbr0 state UP group default qlen 1000
    link/ether d2:b6:08:40:4c:eb brd ff:ff:ff:ff:ff:ff
19: fwln101i0@fwpr101p0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master fwbr101i0 state UP group default qlen 1000
    link/ether d2:60:36:4e:83:cd brd ff:ff:ff:ff:ff:ff
20: veth103i0@if2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master fwbr103i0 state UP group default qlen 1000
    link/ether fe:0f:21:58:38:f9 brd ff:ff:ff:ff:ff:ff link-netnsid 1
21: fwbr103i0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether 3e:bf:73:57:ff:19 brd ff:ff:ff:ff:ff:ff
22: fwpr103p0@fwln103i0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master vmbr0 state UP group default qlen 1000
    link/ether 5a:aa:85:c9:06:35 brd ff:ff:ff:ff:ff:ff
23: fwln103i0@fwpr103p0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master fwbr103i0 state UP group default qlen 1000
    link/ether 3e:bf:73:57:ff:19 brd ff:ff:ff:ff:ff:ff
24: tap106i0: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master fwbr106i0 state UNKNOWN group default qlen 1000
    link/ether 0a:ca:96:04:a2:3f brd ff:ff:ff:ff:ff:ff
25: fwbr106i0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether 22:5b:42:bb:46:50 brd ff:ff:ff:ff:ff:ff
26: fwpr106p0@fwln106i0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master vmbr0 state UP group default qlen 1000
    link/ether 7a:25:02:14:14:50 brd ff:ff:ff:ff:ff:ff
27: fwln106i0@fwpr106p0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master fwbr106i0 state UP group default qlen 1000
    link/ether 22:5b:42:bb:46:50 brd ff:ff:ff:ff:ff:ff
34: tap102i0: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master fwbr102i0 state UNKNOWN group default qlen 1000
    link/ether 9e:75:9b:e8:74:66 brd ff:ff:ff:ff:ff:ff
35: fwbr102i0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether 6a:5b:10:56:86:95 brd ff:ff:ff:ff:ff:ff
36: fwpr102p0@fwln102i0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master vmbr0 state UP group default qlen 1000
    link/ether 76:4d:b4:91:1e:6c brd ff:ff:ff:ff:ff:ff
37: fwln102i0@fwpr102p0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master fwbr102i0 state UP group default qlen 1000
    link/ether 6a:5b:10:56:86:95 brd ff:ff:ff:ff:ff:ff
43: tap100i0: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master fwbr100i0 state UNKNOWN group default qlen 1000
    link/ether ce:a9:66:31:df:d4 brd ff:ff:ff:ff:ff:ff
44: fwbr100i0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether 02:3a:94:56:04:55 brd ff:ff:ff:ff:ff:ff
45: fwpr100p0@fwln100i0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master vmbr0 state UP group default qlen 1000
    link/ether 8a:fc:07:63:f7:11 brd ff:ff:ff:ff:ff:ff
46: fwln100i0@fwpr100p0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master fwbr100i0 state UP group default qlen 1000
    link/ether 02:3a:94:56:04:55 brd ff:ff:ff:ff:ff:ff
47: tap109i0: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master fwbr109i0 state UNKNOWN group default qlen 1000
    link/ether 16:dd:88:37:96:1c brd ff:ff:ff:ff:ff:ff
48: fwbr109i0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether 6a:a9:b2:dd:e6:7e brd ff:ff:ff:ff:ff:ff
49: fwpr109p0@fwln109i0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master vmbr0 state UP group default qlen 1000
    link/ether 7e:dd:65:70:b7:6f brd ff:ff:ff:ff:ff:ff
50: fwln109i0@fwpr109p0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master fwbr109i0 state UP group default qlen 1000
    link/ether 6a:a9:b2:dd:e6:7e brd ff:ff:ff:ff:ff:ff
51: tap108i0: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master fwbr108i0 state UNKNOWN group default qlen 1000
    link/ether 16:35:10:e9:4d:4c brd ff:ff:ff:ff:ff:ff
52: fwbr108i0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether de:6a:6e:ce:b3:fa brd ff:ff:ff:ff:ff:ff
53: fwpr108p0@fwln108i0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master vmbr0 state UP group default qlen 1000
    link/ether fe:b3:11:ef:6a:b7 brd ff:ff:ff:ff:ff:ff
54: fwln108i0@fwpr108p0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master fwbr108i0 state UP group default qlen 1000
    link/ether de:6a:6e:ce:b3:fa brd ff:ff:ff:ff:ff:ff

I only have 8 VMs running but I have built and torn down enough that I think most of those are not being used. when I run

lspci | grep 'Ethernet'

I get:

00:1f.6 Ethernet controller: Intel Corporation Ethernet Connection (11) I219-V
05:00.0 Ethernet controller: Intel Corporation Ethernet Controller I225-V (rev 03)
06:00.0 Ethernet controller: Intel Corporation Ethernet Controller I225-V (rev 03)
07:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8125 2.5GbE Controller (rev 05)

I know that 05 and 06 are a NIC I added in to simulate a PfSense firewall however that is no longer being used as I switched my firewall to a more perminent solution. So I am looking at 07 but I can't find which interface that links to because I can't find the MAC address of it. I do have an ehternet cable plugged into the 2.5gb NIC however it does not light up on the motherboard or the switch side. Can anyone help?

 

[Enspist]

I solved the issue. I changed directory into /ect/network and found the following listed

if-down.d  if-post-down.d  if-pre-up.d  if-up.d  ifupdown2  interfaces  interfacesCopy  interfaces.d  run

I ran cat ./interfacesCopy which produced

auto lo
iface lo inet loopback

auto enp10s0
iface enp10s0 inet manual
#pcie, right

auto enp7s0
iface enp7s0 inet manual

iface wlp9s0 inet manual

iface enp13s0 inet manual

iface enp9s0 inet manual

auto vmbr0
iface vmbr0 inet static
        address 192.168.1.36/24
        gateway 192.168.1.1
        bridge-ports enp10s0
        bridge-stp off
        bridge-fd 0
        bridge-vlan-aware yes
        bridge-vids 2-4094

auto vmbr1
iface vmbr1 inet static
        address 192.168.1.20/24
        bridge-ports enp13s0
        bridge-stp off
        bridge-fd 0

auto vmbr2
iface vmbr2 inet static
        address 192.168.1.21/24
        bridge-ports enp7s0
        bridge-stp off
        bridge-fd 0

I noticed that for the interfaces that I was using, above them was auto [I]interface[/I]

I went and then ran nano ./interfaces and added auto enp7s0 and after running ifreload -a I noticed that the lights on the 2.5gb NIC started to blink. I was then able to change the vrmb0 interface to use enp7s0 via the web GUI and after refreshing the page everything continued to work.

I am still unsure why I have so many extra interfaces though if anyone is able to help with that.