try_to_preadd
try_to_preadd("TCP-MD5 key + TCP-AO required",
try_to_preadd("TCP-AO required on socket + TCP-MD5 key",
try_to_preadd("VRF: TCP-AO key (no l3index) + TCP-MD5 key (no l3index)",
try_to_preadd("VRF: TCP-MD5 key (no l3index) + TCP-AO key (no l3index)",
try_to_preadd("VRF: TCP-AO key (no l3index) + TCP-MD5 key (l3index=0)",
try_to_preadd("VRF: TCP-MD5 key (l3index=0) + TCP-AO key (no l3index)",
try_to_preadd("VRF: TCP-AO key (no l3index) + TCP-MD5 key (l3index=N)",
try_to_preadd("VRF: TCP-MD5 key (l3index=N) + TCP-AO key (no l3index)",
try_to_preadd("VRF: TCP-AO key (l3index=0) + TCP-MD5 key (no l3index)",
try_to_preadd("VRF: TCP-MD5 key (no l3index) + TCP-AO key (l3index=0)",
try_to_preadd("VRF: TCP-AO key (l3index=0) + TCP-MD5 key (l3index=0)",
try_to_preadd("VRF: TCP-MD5 key (l3index=0) + TCP-AO key (l3index=0)",
try_to_preadd("VRF: TCP-AO key (l3index=0) + TCP-MD5 key (l3index=N)",
try_to_preadd("VRF: TCP-MD5 key (l3index=N) + TCP-AO key (l3index=0)",
try_to_preadd("VRF: TCP-AO key (l3index=N) + TCP-MD5 key (no l3index)",
try_to_preadd("VRF: TCP-MD5 key (no l3index) + TCP-AO key (l3index=N)",
try_to_preadd("VRF: TCP-AO key (l3index=N) + TCP-MD5 key (l3index=0)",
try_to_preadd("VRF: TCP-MD5 key (l3index=0) + TCP-AO key (l3index=N)",
try_to_preadd("VRF: TCP-AO key (l3index=N) + TCP-MD5 key (l3index=N)",
try_to_preadd("VRF: TCP-MD5 key (l3index=N) + TCP-AO key (l3index=N)",