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From: | Arul.Shanmugam |
Subject: | [lwip-users] PMTU Discovery Using Lwip |
Date: | Wed, 6 Jan 2016 12:15:00 +0000 |
Hi, I am using lwip stack version 1.3.2 My intension is to perform PMTU discovery using this stack. The below are the steps which I have performed so far. 1.
Set the PMTU on windows to 70. 2.
Connect PC (windows) to a hardware which has an application over Lwip 3.
In Ip.c of lwip, using IPH_OFFSET_SET, i set the DF bit. Eg: IPH_OFFSET_SET(iphdr,htons(ip_df)) 4.
After this I send 1000 from hardware to PC. 5.
I expect some error but surprisingly all 1000 bytes of data is received on the PC application. Can some guidance be provided on this? Regards Arul |
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