Issues with sfip_fast_lt6 on Raspberry Pi

[Jon Frydensbjerg via Snort-devel <snort-devel () lists snort org>]

Hi,

I'm now successfully running snort 2.9.16.1 in IPS mode using the nfq 
DAQ on a Raspberry Pi 4 compiled for 32-bit ARM via GCC 8.3.

Initially it didn't work well for me as I would lose all network 
connectivity immediately after Snort had loaded. After debugging the 
problem I narrowed the issue down to changes in the sfip_fast_lt6() 
function of src/sfutil/sf_ip.h (it was modified between 2.9.15.1 and 
2.9.16).

However, when I switch back to the old version from 2.9.15.1 everything 
is working great. For now I've patched my local installation by simply 
making a copy of the old function code.

Unfortunately I don't have the time to dig deeper into this. It's not 
clear to me from a quick glance why the 2.9.16 version of 
sfip_fast_lt6() doesn't work.

Cheers,

-Jon

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