'ikectl reset sa' generates broken SADB_X_SPDDELETE if multiple CHILD-SA's negotiated.

[hsuenaga]

Network:
[OpenBSD(Reference)] --- [NetBSD(DUT)]
192.168.87.10 192.168.87.11

Config:
OpenBSD:

ikev2 active esp \
     from 192.168.87.10 to 192.168.87.11 \
     peer 192.168.87.11 local 192.168.87.10 \
     ikesa enc 3des auth hmac-sha1 group modp1024 \
     childsa enc aes-128 auth hmac-sha1 \
     psk "foobar"

NetBSD:

ikev2 test-policy active esp \
     from 192.168.87.11 to 192.168.87.10 \
     peer 192.168.87.10 local 192.168.87.11 \
     ikesa enc 3des auth hmac-sha1 group modp1024 \
     childsa enc aes-128 auth hmac-sha1 \
     psk "foobar"

(1) Prepare

openbsd# iked

netbsd# iked -dvv

(waiting for 1st CHILD_SA established)

(2) Create more SA

openbsd# ikectl reset sa

XXX: openbsd doesn't send INFOMATION(DELETE SA)

(3) Reset SA

netbsd# ike reset sa

(4) the error

SADB_X_SPDDELETE: pfkey_reply message: Invalid argument
SADB_X_SPDDELETE: pfkey_reply message: Invalid argument