Fails with "Packet error"

[amirgon]

I built the module and loaded it successfully.

# insmod kgdboe.ko device_name=enp2s0f0
# dmesg | tail
...
[  127.055363] kgdb: Registered I/O driver kgdboe.
[  127.055450] kgdboe: Successfully initialized. Use the following gdb command to attach:
[  127.055454]  target remote udp:10.5.221.4:31337

However, when trying to connect with gdb I'm getting packet errors and debug session does not start:

(gdb) target remote udp:10.5.221.4:31337
warning: The remote protocol may be unreliable over UDP.
Some events may be lost, rendering further debugging impossible.
Remote debugging using udp:10.5.221.4:31337
Ignoring packet error, continuing...
Ignoring packet error, continuing...
Ignoring packet error, continuing...
Ignoring packet error, continuing...
Ignoring packet error, continuing...
warning: Invalid remote reply: timeout

---

OS and NIC details:

Linux lb-tlvb-emu6 3.10.0-957.el7.x86_64 #1 SMP Thu Nov 8 23:39:32 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

# lshw -class network
  *-network:0
       description: Ethernet interface
       product: I350 Gigabit Network Connection
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:02:00.0
       logical name: enp2s0f0
       version: 01
       serial: 00:1e:67:9b:10:c2
       size: 1Gbit/s
       capacity: 1Gbit/s
       width: 32 bits
       clock: 33MHz
       capabilities: pm msi msix pciexpress vpd bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=igb driverversion=5.4.0-k duplex=full firmware=1.48, 0x80000707 ip=10.5.221.4 latency=0 link=yes multicast=yes port=twisted pair speed=1Gbit/s
       resources: irq:33 memory:d1160000-d117ffff ioport:2060(size=32) memory:d11b0000-d11b3fff memory:d12a0000-d12bffff memory:d1280000-d129ffff