# Network Problem Linux

**URL:** <https://discourse.grlib.community/t/network-problem-linux/186>\
**Category:** General - Software\
**Created:** [4 August 2021 08:49 UTC](https://discourse.grlib.community/t/network-problem-linux/186 "2021-08-04T08:49:27Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![FranzDu](https://avatars.discourse-cdn.com/v4/letter/f/91b2a8/32.png) [@FranzDu](https://discourse.grlib.community/u/FranzDu)\
**Post date:** [4 August 2021 08:49 UTC](https://discourse.grlib.community/t/network-problem-linux/186/1 "2021-08-04T08:49:27Z")

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Hello,  
I am currently working with Linux (4.9.246) on VC707 board with Leon5. I am using the template of the GRLIB IP 2021.2b4267 library, which I installed with vivado 2018.1. Linux is running normally so far, except for a problem with the network. With a normal size of 56 bytes the packets do not arrive:

```auto
ping 192.168.100.153 -s 8
PING 192.168.100.153 (192.168.100.153): 8 data bytes
--- 192.168.100.153 ping statistics ---
5 packets transmitted, 5 packets received, 0% packet loss
round-trip min/avg/max = 1.051/1.316/2.034 ms

ping 192.168.100.153 -s 30
PING 192.168.100.153 (192.168.100.153): 30 data bytes
8 packets transmitted, 4 packets received, 50% packet loss
round-trip min/avg/max = 1.054/1.395/2.075 ms

ping 192.168.100.153
PING 192.168.100.153 (192.168.100.153): 56 data bytes
--- 192.168.100.153 ping statistics ---
21 packets transmitted, 1 packets received, 95% packet loss
round-trip min/avg/max = 1.376/1.376/1.376 ms

```

I used the settings from the Linux User Guide. (“Aeroflex Gaisler GRETH Ethernet MAC support” (GRETH)").  
To exclude that it is due to the kernel version, I also tested the image of version 5.10, but the same problem appears. Can you help me to find out what the problem could be or how to fix it?