The ethernet port not work

ifconfig -a shows
docker0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 172.17.0.1 netmask 255.255.0.0 broadcast 172.17.255.255
ether 02:42:b1:61:9f:01 txqueuelen 0 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

dummy0: flags=130<BROADCAST,NOARP> mtu 1500
ether e2:0a:28:af:c9:1d txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

eth0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether 48:b0:2d:5a:85:3c txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 37

l4tbr0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.55.1 netmask 255.255.255.0 broadcast 192.168.55.255
inet6 fe80::d882:6dff:fe55:abb1 prefixlen 64 scopeid 0x20
inet6 fe80::1 prefixlen 128 scopeid 0x20
ether da:82:6d:55:ab:b1 txqueuelen 1000 (Ethernet)
RX packets 523 bytes 100150 (100.1 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 934 bytes 101807 (101.8 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10
loop txqueuelen 1 (Local Loopback)
RX packets 1713 bytes 119333 (119.3 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 1713 bytes 119333 (119.3 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

rndis0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet6 fe80::d882:6dff:fe55:abb1 prefixlen 64 scopeid 0x20
ether da:82:6d:55:ab:b1 txqueuelen 1000 (Ethernet)
RX packets 253 bytes 41645 (41.6 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 106 bytes 16834 (16.8 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

usb0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet6 fe80::d882:6dff:fe55:abb3 prefixlen 64 scopeid 0x20
ether da:82:6d:55:ab:b3 txqueuelen 1000 (Ethernet)
RX packets 299 bytes 63036 (63.0 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 934 bytes 170532 (170.5 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

lspci -v shows:
0005:03:00.0 Ethernet controller: Intel Corporation Device 15f3 (rev 03)
Subsystem: Intel Corporation Device 0000
Flags: fast devsel
Memory at 1f40c00000 (32-bit, non-prefetchable) [disabled] [size=1M]
Memory at 1f40e00000 (32-bit, non-prefetchable) [disabled] [size=16K]
[virtual] Expansion ROM at 1f40d00000 [disabled] [size=1M]
Capabilities:

0005:04:00.0 Ethernet controller: Intel Corporation Device 15f3 (rev 03)
Subsystem: Intel Corporation Device 0000
Flags: fast devsel
Memory at 1f40f00000 (32-bit, non-prefetchable) [disabled] [size=1M]
Memory at 1f41100000 (32-bit, non-prefetchable) [disabled] [size=16K]
[virtual] Expansion ROM at 1f41000000 [disabled] [size=1M]
Capabilities:

0005:05:00.0 Ethernet controller: Intel Corporation Device 15fd (rev 01)
Subsystem: Intel Corporation Device 0000
Flags: fast devsel
Memory at 1f40000000 (32-bit, non-prefetchable) [disabled] [size=8M]
Memory at 1f40800000 (32-bit, non-prefetchable) [disabled] [size=16K]
Capabilities:

0005:06:00.0 Ethernet controller: Intel Corporation Device 15f3 (rev 03)
Subsystem: Intel Corporation Device 0000
Flags: fast devsel
Memory at 1f41200000 (32-bit, non-prefetchable) [disabled] [size=1M]
Memory at 1f41400000 (32-bit, non-prefetchable) [disabled] [size=16K]
[virtual] Expansion ROM at 1f41300000 [disabled] [size=1M]
Capabilities:

the four ethernet port in the carrier board can not be found in system, any solution?

Is it Xavier NX devkit or custom carrier board?
Which JetPack version you used on this device?

custom carrier board,
jetpack 4.6 ,l4t32.72

Have you followed the Xavier NX adaptation guide to bring up your devcie?
See NVIDIA Jetson Linux Driver Package Software Features : Jetson Module Adaptation and Bring-Up | NVIDIA Docs

Since you are telling PCIe. Which means this is not going through NV native ethernet driver/controller.

And lspci can show your Intel card. Which means this is not NV issue. Please contact the card vendor for help.

the ethernet chip is intel i225 , should I install the driver?

OK , it’s i225 chip driver problem