[BUG] Polycube source nat can not upload from internal ip

[Polaris0112]

Describe the bug

I have some internal ips and use one share public ip.
So I need snat for our internal ips to access websites throught that public ip
And it can work with internal ips to access public and download file, but failed with upload files

To Reproduce

Steps to reproduce the behavior:

1. One Server with a static public ip and have a few internal ips
2. Update polycube rules like
   polycubectl nat add nat1
   polycubectl attach nat1 eth0
   polycubectl nat1 rule snat append internal-net=10.0.0.0/8 external-ip={public ip}
3. After step 2, the internal ips can access website and download files from public, but failed with upload
4. Upload Speedtest show no speed on it. And can not upload file/photo from some online drive website

Expected behavior

Throught SNAT rule can use also with upload

Please tell us about your environment:

1. OS details: 18.04.6 LTS (Bionic Beaver)
2. Kernel details: Linux test-20220517 5.17.5 pcn_log cannot be split in multiple lines #1 SMP PREEMPT Thu Apr 28 11:05:12 CST 2022 x86_64 x86_64 x86_64 GNU/Linux
3. Polycube Version:
   polycubectl:
   version: v0.9.0+ [git: (branch/commit): master/49834b6f]
   polycubed:
   version: v0.9.0+ [git: (branch/commit): master/49834b6f]
4. Polycube Log: Attach the log from /var/log/polycube/polycubed.log
   [2022-05-27 10:03:51.975] [polycubed] [info] configuration parameters:
   [2022-05-27 10:03:51.975] [polycubed] [info] loglevel: info
   [2022-05-27 10:03:51.975] [polycubed] [info] daemon: true
   [2022-05-27 10:03:51.975] [polycubed] [info] pidfile: /var/run/polycube.pid
   [2022-05-27 10:03:51.975] [polycubed] [info] port: 9000
   [2022-05-27 10:03:51.975] [polycubed] [info] addr: localhost
   [2022-05-27 10:03:51.975] [polycubed] [info] logfile: /var/log/polycube/polycubed.log
   [2022-05-27 10:03:51.975] [polycubed] [info] cubes-dump-file: /etc/polycube/cubes.yaml
   [2022-05-27 10:03:51.975] [polycubed] [info] cubes-dump-clean-init: false
   [2022-05-27 10:03:51.975] [polycubed] [info] cubes-dump-enable: false
   [2022-05-27 10:03:51.975] [polycubed] [info] polycubed starting...
   [2022-05-27 10:03:51.975] [polycubed] [info] version v0.9.0+ [git: (branch/commit): master/49834b6f]
   [2022-05-27 10:03:51.975] [polycubed] [info] running as daemon
   [2022-05-27 10:05:12.927] [Nat] [nat1] [info] Creating Nat instance
   [2022-05-27 10:05:12.927] [Nat] [nat1] [info] Adding rule
   [2022-05-27 10:05:55.725] [Nat] [nat1] [info] Creating RuleSnatEntry instance: 10.0.0.0/8 -> 209.97.171.16
   [2022-05-27 10:08:03.944] [Nat] [nat1] [info] Dropping packet
   [2022-05-27 10:08:03.944] [Nat] [nat1] [info] Dropping packet
   [2022-05-27 10:08:03.944] [Nat] [nat1] [info] Dropping packet
   [2022-05-27 10:08:03.945] [Nat] [nat1] [info] Dropping packet
   [2022-05-27 10:08:03.945] [Nat] [nat1] [info] Dropping packet
   [2022-05-27 10:08:03.945] [Nat] [nat1] [info] Dropping packet
   [2022-05-27 10:08:03.945] [Nat] [nat1] [info] Dropping packet
   [2022-05-27 10:08:03.945] [Nat] [nat1] [info] Dropping packet
   [2022-05-27 10:08:03.945] [Nat] [nat1] [info] Dropping packet
   [2022-05-27 10:08:04.241] [Nat] [nat1] [info] Dropping packet
   [2022-05-27 10:08:04.241] [Nat] [nat1] [info] Dropping packet
   [2022-05-27 10:08:04.509] [Nat] [nat1] [info] Dropping packet

Additional context

Add any other context about the problem here.

[Polaris0112]

#406 like this issue, I reinstall the kernel v5.4.x and it can work now.