I'd like to set up both esp and auth to NULL to test some kernel
code (for perf, so want to eliminate the cost of crypto).
with older swan packages, I was able to use the syntax "esp=null-null"
for this, but with libreswan-3.15-7.3.0.1.el6.x86_64, the only syntax
that is accepted in my tunnel .conf file is "esp=null", and this
leaves me with the following in the output of "ip x s"
:
proto esp spi 0x53b065c6 reqid 16389 mode transport
replay-window 32
auth-trunc hmac(md5) 0xd374a491490abf161152bef3108816c8 96
enc ecb(cipher_null)
:
is there some way I can set the auth-trunc to null too?
--Sowmini
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