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examples/ipsec-secgw: fix TAP default MAC address
examples: remove check for old broken pkg-config
examples/ipsec-secgw: support flow director
examples/ipsec-secgw: fix default configuration
examples/ipsec-secgw: support SM4-CBC and SM3-HMAC
examples: use SPDX tag for Intel copyright files
examples/ipsec-secgw: fix cryptodev and eventdev IDs
examples: fix lcore ID restriction
ipsec: use IPv6 address structure
examples/ipsec-secgw: support more flow patterns and actions
examples/ipsec-secgw: update incremental checksum
examples/ipsec-secgw: resolve shadowed variables
examples: move alignment attribute on types for MSVC
examples/ipsec-secgw: fix dequeue count from cryptodev
examples/ipsec-secgw: drop packets in poll mode
examples/ipsec-secgw: fix build with glibc 2.43
examples: use strlcpy and strlcat
examples/ipsec-secgw: add SAD cache