ipsec: libreswan: Reduce chances for crossing streams. #2509

Job	Run time
linux deb no dpdk	4m 26s
linux rpm fedora	3m 55s
osx clang --disable-ssl	1m 40s
dpdk gcc	7s
linux gcc --disable-ssl	2m 7s
linux clang --disable-ssl	2m 17s
linux gcc c99	2m 5s
linux clang c99	1m 57s
linux gcc test	7m 34s
linux clang test asan	13m 20s
linux clang test ubsan	9m 12s
linux gcc test --enable-shared	10m 14s
linux clang test --enable-shared	10m 18s
linux gcc test dpdk	8m 8s
linux clang test dpdk	7m 46s
linux gcc test -ljemalloc	8m 18s
linux clang test -ljemalloc	8m 7s
linux gcc --enable-afxdp	2m 4s
linux clang --enable-afxdp	2m 23s
linux gcc dpdk --enable-shared	2m 50s
linux clang dpdk --enable-shared	2m 46s
linux gcc dpdk-shared	2m 11s
linux clang dpdk-shared	2m 28s
linux gcc dpdk-shared --enable-shared	2m 50s
linux clang dpdk-shared --enable-shared	2m 42s
linux gcc m32 --disable-ssl	1m 52s
	2h 3m 37s

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