Image upload does not work over UDP - Zephyr smp_svr sample

[rlevano77]

I am trying to setup the zephyr samples/subsys/mgmt/mcumgr/smp_svr using UDP
I am using Windows 11 and Golang v1.18.4
After I added mcuboot to my atsame54_xpro board.
I built the smp_svr with UDP support using :
west build -p auto -b myboard -d build-signed -- -DCONFIG_MCUBOOT_SIGNATURE_KEY_FILE=\"bootloader/mcuboot/root-rsa-2048.pem\" -DOVERLAY_CONFIG=overlay-udp.conf

mcuboot reconigze the image :
Booting Zephyr OS build zephyr-v3.1.0-812-g88ca3aca98c0
I: Starting bootloader
I: Primary image: magic=unset, swap_type=0x1, copy_done=0x3, image_ok=0x3
I: Scratch: magic=unset, swap_type=0x1, copy_done=0x3, image_ok=0x3
I: Boot source: primary slot
I: Swap type: none
I: Bootloader chainload address offset: 0x10000
I: Jumping to the first image slot
[00:00:00.255,000] mdio_sam: transfer timedout MDIO
[00:00:00.510,000] mdio_sam: transfer timedout MDIO
[00:00:00.765,000] mdio_sam: transfer timedout MDIO
Booting Zephyr OS build zephyr-v3.1.0-812-g88ca3aca98c0
[00:00:01.020,000] mdio_sam: transfer timedout MDIO
[00:00:01.020,000] eth_sam: MAC: 02:04:25:4b:d0:b9
[00:00:01.020,000] eth_sam: Queue 0 activated
[00:00:06.069,000] phy_mii: PHY (0) Link speed 100 Mb, full duplex
[00:00:06.069,000] eth_sam: Link up
[00:00:06.070,000] smp_udp_sample: Network connected
[00:00:06.070,000] smp_sample: build time: Jul 20 2022 06:19:25
[00:00:06.070,000] smp_udp: Started (IPv4)

I tested the udp connection and works ok :
`$ mcumgr --conntype udp --connstring=[192.168.1.71]:1337 echo hello
hello

$ mcumgr --conntype udp --connstring=[192.168.1.71]:1337 image list
Images:
image=0 slot=0
version: 0.0.0
bootable: true
flags: active confirmed
hash: 5fbc81f7d0f5e5de22f254746bc977ce8836bf364e576f4f03c418bd1451679c
Split status: N/A (0)`

But when I try to upload an image I only see
$ mcumgr --conntype udp --connstring=[192.168.1.71]:1337 image upload build-signed/zephyr/zephyr.signed.bin
0 B / 71.88 KiB [------------------------------------------------------------------------------------------------------------------------------------------------------------] 0.00%
and nothing uploads.

[L1amaGod]

Could I ask which method do you use to connect to the IP 192.168.1.71?