Hi Sooraj, I think pcapscan.cc doesn’t support extended flags. You may need to add HS_EXT_FLAG_MIN_OFFSET flag when compile your pattern in pcapscan.cc. Thanks, Xiang From: Hyperscan [mailto:hyperscan-bounces@lists.01.org] On Behalf Of Sooraj KS Sent: Tuesday, October 23, 2018 4:46 PM To: hyperscan(a)lists.01.org Subject: [Hyperscan] pcapscan Hello, Please let me know how can I test HS extented parameters with pcapscan. The pcapscan shows "Unsupported flag '{'"" when I add HS extended parameter. Am I missing anything here? ~/hyperscan/build/bin# ./hscheck -e pattern.txt OK: 1:/foo.*bar/{min_offset=10} SUMMARY: 0 of 1 failed. ~/hyperscan/build/bin# ./pcapscan -n 10 pattern.txt data.pcap Pattern file: pattern.txt Unsupported flag '{' I have installed HS version 5.0.0 Thanks, Sooraj