On Tue, Oct 24, 2023 at 10:42:11PM +0200, Tobias Heider wrote:
> On Tue, Oct 24, 2023 at 03:35:57PM -0500, [email protected] wrote:
> > On Tue, Oct 24, 2023 at 03:06:41PM -0500, [email protected] wrote:
> > [..]
> > >$ uname -a
> > >OpenBSD openbsd-server 7.4 GENERIC#1336 amd64
> > >
> > >ikev2 "LINUX-CLIENT_INET4_LAN" passive esp \
> > >  from 10.88.0.0/22 to 10.88.12.0/24 \
> > >  from 203.0.113.92 to 10.88.12.0/24 \
> > >  peer any local openbsd-server.example.com \
> > >  ikesa enc aes-256 prf hmac-sha2-512 auth hmac-sha2-512 group ecp521 \
> > >   childsa enc aes-256 prf hmac-sha2-512 auth hmac-sha2-512 group ecp521 \
> > >  srcid openbsd-server.example.com dstid linux-client.example.com \
> > >  ikelifetime 4h \
> > >  psk "123123123" \
> > >  tag "$name-$id"
> > >
> > >Client configuration
> > >
> > ># uname -a
> > >Linux linux-client 6.1.14-v7+ #1633 SMP Thu Mar  2 11:02:03 GMT 2023 
> > >armv7l GNU/Linux
> > >
> > >ikev2 "OPENBSD-SERVER_INET4_NETS" active esp \
> > >  from 10.88.12.0/24 to 10.88.0.0/22 \
> > >  from 10.88.12.0/24 to 203.0.113.92 \
> > >  peer 203.0.113.92 \
> > >  ikesa enc aes-256 prf hmac-sha2-512 auth hmac-sha2-512 group ecp521 \
> > >   childsa enc aes-256 prf hmac-sha2-512 auth hmac-sha2-512 group ecp521 \
> > >  srcid openbsd-server.example.com dstid linux-client.example.com \
> > >  ikelifetime 4h \
> > >  psk "123123123" \
> > >  tag "$name-$id"
> 
> One thing that is clearly wrong are the IDs. The client should probably use:
> 
>    srcid linux-client.example.com dstid openbsd-server.example.com \

urgh just saw that you already fixed that.

> 
> > 
> > 
> > So some of these were a bit backwards. I fixed the configurations but am 
> > now seeing the following on the server side:
> > 
> > Oct 24 15:22:10 openbsd-server iked[12052]: spi=0x84023eb6ab6a9d33: 
> > ikev2_resp_recv: failed to parse message
> > 
> > Updated server configuration
> > 
> > ikev2 "LINUX-CLIENT_INET4_LAN" passive esp \
> >   from 10.88.0.0/22 to 10.88.12.0/24 \
> >   from 203.0.113.92 to 10.88.12.0/24 \
> >   peer any local 203.0.113.92 \
> >   ikesa enc aes-256-gcm-12 prf hmac-sha2-512 group ecp521 \
> >    childsa enc aes-256-gcm prf hmac-sha2-512 group ecp521 \
> >   srcid openbsd-server.example.com dstid linux-client.example.com \
> >   lifetime 3600 bytes 1G \
> >   psk "123123123" \
> >   tag "$name-$id"
> > 
> > Updated client configuration
> > 
> > ikev2 "OPENBSD-SERVER_INET4_NETS" active esp \
> >   from 10.88.12.0/24 to 10.88.0.0/22 \
> >   from 10.88.12.0/24 to 203.0.113.92 \
> >   peer openbsd-server.example.com \
> >   ikesa enc aes-256-gcm-12 prf hmac-sha2-512 group ecp521 \
> >    childsa enc aes-256-gcm prf hmac-sha2-512 group ecp521 \
> >   srcid linux-client.example.com dstid openbsd-server.example.com \
> >   lifetime 3600 bytes 1G \
> >   psk "123123123" \
> >   tag "$name-$id"

Does it work if you remove the second "from ... to" line? It looks like the SA
payload is malformed, so the flows are the most likely cause.

> > 
> > 
> > Full logs are below
> > 
> > Server Logs
> > 
> > # iked -dvv
> > policy_lookup: setting policy 'LINUX-CLIENT_INET4_LAN'
> > spi=0xb825bd62181aa707: recv IKE_SA_INIT req 0 peer 192.0.51.245:23804
> > local 203.0.113.92:500, 330 bytes, policy 'LINUX-CLIENT_INET4_LAN'
> > ikev2_recv: ispi 0xb825bd62181aa707 rspi 0x0000000000000000
> > ikev2_policy2id: srcid FQDN/openbsd-server.example.com length 23
> > ikev2_pld_parse: header ispi 0xb825bd62181aa707 rspi 0x0000000000000000
> > nextpayload SA version 0x20 exchange IKE_SA_INIT flags 0x08 msgid 0 length
> > 330 response 0
> > ikev2_pld_payloads: payload SA nextpayload KE critical 0x00 length 40
> > ikev2_pld_sa: more 0 reserved 0 length 36 proposal #1 protoid IKE spisize 0
> > xforms 3 spi 0
> > ikev2_pld_xform: more 3 reserved 0 length 12 type ENCR id AES_GCM_12
> > ikev2_pld_attr: attribute type KEY_LENGTH length 256 total 4
> > ikev2_pld_xform: more 3 reserved 0 length 8 type DH id ECP_521
> > ikev2_pld_xform: more 0 reserved 0 length 8 type PRF id HMAC_SHA2_512
> > ikev2_pld_payloads: payload KE nextpayload NONCE critical 0x00 length 140
> > ikev2_pld_ke: dh group ECP_521 reserved 0
> > ikev2_pld_payloads: payload NONCE nextpayload VENDOR critical 0x00 length 36
> > ikev2_pld_payloads: payload VENDOR nextpayload NOTIFY critical 0x00 length
> > 16
> > ikev2_pld_payloads: payload NOTIFY nextpayload NOTIFY critical 0x00 length
> > 28
> > ikev2_pld_notify: protoid NONE spisize 0 type NAT_DETECTION_SOURCE_IP
> > ikev2_nat_detection: peer source 0xb825bd62181aa707 0x0000000000000000
> > 192.0.51.245:23804
> > ikev2_pld_notify: NAT_DETECTION_SOURCE_IP detected NAT
> > ikev2_pld_payloads: payload NOTIFY nextpayload NOTIFY critical 0x00 length
> > 28
> > ikev2_pld_notify: protoid NONE spisize 0 type NAT_DETECTION_DESTINATION_IP
> > ikev2_nat_detection: peer destination 0xb825bd62181aa707 0x0000000000000000
> > 203.0.113.92:500
> > ikev2_pld_payloads: payload NOTIFY nextpayload NONE critical 0x00 length 14
> > ikev2_pld_notify: protoid NONE spisize 0 type SIGNATURE_HASH_ALGORITHMS
> > ikev2_pld_notify: signature hash SHA2_256 (2)
> > ikev2_pld_notify: signature hash SHA2_384 (3)
> > ikev2_pld_notify: signature hash SHA2_512 (4)
> > proposals_negotiate: score 3
> > proposals_negotiate: score 0
> > proposals_negotiate: score 0
> > proposals_negotiate: score 0
> > proposals_negotiate: score 0
> > proposals_negotiate: score 0
> > proposals_negotiate: score 0
> > proposals_negotiate: score 3
> > policy_lookup: setting policy 'LINUX-CLIENT_INET4_LAN'
> > spi=0xb825bd62181aa707: sa_state: INIT -> SA_INIT
> > proposals_negotiate: score 3
> > sa_stateok: SA_INIT flags 0x0000, require 0x0000 
> > sa_stateflags: 0x0000 -> 0x0020 sa (required 0x0000 )
> > spi=0xb825bd62181aa707: ikev2_sa_keys: DHSECRET with 66 bytes
> > ikev2_sa_keys: SKEYSEED with 64 bytes
> > spi=0xb825bd62181aa707: ikev2_sa_keys: S with 80 bytes
> > ikev2_prfplus: T1 with 64 bytes
> > ikev2_prfplus: T2 with 64 bytes
> > ikev2_prfplus: T3 with 64 bytes
> > ikev2_prfplus: T4 with 64 bytes
> > ikev2_prfplus: T5 with 64 bytes
> > ikev2_prfplus: Tn with 320 bytes
> > ikev2_sa_keys: SK_d with 64 bytes
> > ikev2_sa_keys: SK_ei with 36 bytes
> > ikev2_sa_keys: SK_er with 36 bytes
> > ikev2_sa_keys: SK_pi with 64 bytes
> > ikev2_sa_keys: SK_pr with 64 bytes
> > ikev2_resp_ike_sa_init: detected NAT, enabling UDP encapsulation
> > ikev2_add_proposals: length 36
> > ikev2_next_payload: length 40 nextpayload KE
> > ikev2_next_payload: length 140 nextpayload NONCE
> > ikev2_next_payload: length 36 nextpayload VENDOR
> > ikev2_next_payload: length 16 nextpayload NOTIFY
> > ikev2_nat_detection: local source 0xb825bd62181aa707 0xe5481ced5de262ea
> > 203.0.113.92:500
> > ikev2_next_payload: length 28 nextpayload NOTIFY
> > ikev2_nat_detection: local destination 0xb825bd62181aa707 0xe5481ced5de262ea
> > 192.0.51.245:23804
> > ikev2_next_payload: length 28 nextpayload NOTIFY
> > ikev2_next_payload: length 14 nextpayload NONE
> > ikev2_pld_parse: header ispi 0xb825bd62181aa707 rspi 0xe5481ced5de262ea
> > nextpayload SA version 0x20 exchange IKE_SA_INIT flags 0x20 msgid 0 length
> > 330 response 1
> > ikev2_pld_payloads: payload SA nextpayload KE critical 0x00 length 40
> > ikev2_pld_sa: more 0 reserved 0 length 36 proposal #1 protoid IKE spisize 0
> > xforms 3 spi 0
> > ikev2_pld_xform: more 3 reserved 0 length 12 type ENCR id AES_GCM_12
> > ikev2_pld_attr: attribute type KEY_LENGTH length 256 total 4
> > ikev2_pld_xform: more 3 reserved 0 length 8 type PRF id HMAC_SHA2_512
> > ikev2_pld_xform: more 0 reserved 0 length 8 type DH id ECP_521
> > ikev2_pld_payloads: payload KE nextpayload NONCE critical 0x00 length 140
> > ikev2_pld_ke: dh group ECP_521 reserved 0
> > ikev2_pld_payloads: payload NONCE nextpayload VENDOR critical 0x00 length 36
> > ikev2_pld_payloads: payload VENDOR nextpayload NOTIFY critical 0x00 length
> > 16
> > ikev2_pld_payloads: payload NOTIFY nextpayload NOTIFY critical 0x00 length
> > 28
> > ikev2_pld_notify: protoid NONE spisize 0 type NAT_DETECTION_SOURCE_IP
> > ikev2_pld_payloads: payload NOTIFY nextpayload NOTIFY critical 0x00 length
> > 28
> > ikev2_pld_notify: protoid NONE spisize 0 type NAT_DETECTION_DESTINATION_IP
> > ikev2_pld_payloads: payload NOTIFY nextpayload NONE critical 0x00 length 14
> > ikev2_pld_notify: protoid NONE spisize 0 type SIGNATURE_HASH_ALGORITHMS
> > spi=0xb825bd62181aa707: send IKE_SA_INIT res 0 peer 192.0.51.245:23804
> > local 203.0.113.92:500, 330 bytes
> > config_free_proposals: free 0x292d636b0f0
> > spi=0xb825bd62181aa707: recv IKE_AUTH req 1 peer 192.0.51.245:3916 local
> > 203.0.113.92:4500, 251 bytes, policy 'LINUX-CLIENT_INET4_LAN'
> > ikev2_recv: ispi 0xb825bd62181aa707 rspi 0xe5481ced5de262ea
> > ikev2_recv: updated SA to peer 192.0.51.245:3916 local 203.0.113.92:4500
> > ikev2_pld_parse: header ispi 0xb825bd62181aa707 rspi 0xe5481ced5de262ea
> > nextpayload SK version 0x20 exchange IKE_AUTH flags 0x08 msgid 1 length 251
> > response 0
> > ikev2_pld_payloads: payload SK nextpayload IDi critical 0x00 length 223
> > ikev2_msg_decrypt: IV length 8
> > ikev2_msg_decrypt: encrypted payload length 199
> > ikev2_msg_decrypt: integrity checksum length 12
> > ikev2_msg_decrypt: AAD length 32
> > ikev2_msg_decrypt: decrypted payload length 199/199 padding 0
> > ikev2_pld_payloads: decrypted payload IDi nextpayload IDr critical 0x00
> > length 31
> > ikev2_pld_id: id FQDN/linux-client.example.com length 27
> > ikev2_pld_payloads: decrypted payload IDr nextpayload AUTH critical 0x00
> > length 27
> > ikev2_pld_id: id FQDN/openbsd-server.example.com length 23
> > ikev2_pld_payloads: decrypted payload AUTH nextpayload SA critical 0x00
> > length 72
> > ikev2_pld_auth: method SHARED_KEY_MIC length 64
> > ikev2_pld_payloads: decrypted payload SA nextpayload TSi critical 0x00
> > length 4
> > ikev2_validate_sa: malformed payload: too short for header (0 < 8)
> > spi=0xb825bd62181aa707: ikev2_resp_recv: failed to parse message
> > spi=0xb825bd62181aa707: recv IKE_AUTH req 1 peer 192.0.51.245:3916 local
> > 203.0.113.92:4500, 251 bytes, policy 'LINUX-CLIENT_INET4_LAN'
> > ikev2_recv: ispi 0xb825bd62181aa707 rspi 0xe5481ced5de262ea
> > ikev2_recv: updated SA to peer 192.0.51.245:3916 local 203.0.113.92:4500
> > ikev2_pld_parse: header ispi 0xb825bd62181aa707 rspi 0xe5481ced5de262ea
> > nextpayload SK version 0x20 exchange IKE_AUTH flags 0x08 msgid 1 length 251
> > response 0
> > ikev2_pld_payloads: payload SK nextpayload IDi critical 0x00 length 223
> > ikev2_msg_decrypt: IV length 8
> > ikev2_msg_decrypt: encrypted payload length 199
> > ikev2_msg_decrypt: integrity checksum length 12
> > ikev2_msg_decrypt: AAD length 32
> > ikev2_msg_decrypt: decrypted payload length 199/199 padding 0
> > ikev2_pld_payloads: decrypted payload IDi nextpayload IDr critical 0x00
> > length 31
> > ikev2_pld_id: id FQDN/linux-client.example.com length 27
> > ikev2_pld_payloads: decrypted payload IDr nextpayload AUTH critical 0x00
> > length 27
> > ikev2_pld_id: id FQDN/openbsd-server.example.com length 23
> > ikev2_pld_payloads: decrypted payload AUTH nextpayload SA critical 0x00
> > length 72
> > ikev2_pld_auth: method SHARED_KEY_MIC length 64
> > ikev2_pld_payloads: decrypted payload SA nextpayload TSi critical 0x00
> > length 4
> > ikev2_validate_sa: malformed payload: too short for header (0 < 8)
> > spi=0xb825bd62181aa707: ikev2_resp_recv: failed to parse message
> > ^Ccontrol exiting, pid 6682
> > ca exiting, pid 23273
> > config_doreset: flushing policies
> > config_free_proposals: free 0x292d6376c80
> > config_free_proposals: free 0x292d6376910
> > config_free_flows: free 0x292d638f400
> > config_free_flows: free 0x292d638f800
> > config_free_flows: free 0x292d6361c00
> > config_free_flows: free 0x292d6361000
> > config_free_proposals: free 0x292d6395000
> > config_free_proposals: free 0x292d6395d20
> > config_free_proposals: free 0x292d6395870
> > config_free_proposals: free 0x292d6384f00
> > config_free_flows: free 0x292d6383000
> > config_free_proposals: free 0x292d636bc80
> > config_free_proposals: free 0x292d6395730
> > config_free_proposals: free 0x292d6376b90
> > config_free_proposals: free 0x292d636b500
> > config_free_flows: free 0x292d6361800
> > config_free_proposals: free 0x292d6376cd0
> > config_free_proposals: free 0x292d6384410
> > config_free_proposals: free 0x292d636b460
> > config_free_proposals: free 0x292d6384d70
> > config_free_flows: free 0x292d6383c00
> > config_doreset: flushing SAs
> > config_free_proposals: free 0x292d63958c0
> > config_free_proposals: free 0x292d636bd70
> > config_free_childsas: free 0x292d636c840
> > config_free_childsas: free 0x292d6366540
> > sa_free_flows: free 0x292d635c800
> > sa_free_flows: free 0x292d638f000
> > sa_free_flows: free 0x29390660400
> > sa_free_flows: free 0x292d635c400
> > sa_free_flows: free 0x292d6383400
> > sa_free_flows: free 0x292d635c000
> > sa_free_flows: free 0x29390655800
> > sa_free_flows: free 0x292d6389800
> > config_free_proposals: free 0x292d6376f00
> > config_free_proposals: free 0x292d6376f50
> > config_free_flows: free 0x292d6361400
> > config_free_flows: free 0x292d6383800
> > config_free_flows: free 0x292d6389c00
> > config_free_flows: free 0x292d637fc00
> > config_free_proposals: free 0x292d6384730
> > config_free_proposals: free 0x292d63954b0
> > config_free_proposals: free 0x292d6376960
> > config_free_flows: free 0x292d6389000
> > config_free_flows: free 0x292d6389400
> > config_doreset: flushing users
> > ikev2 exiting, pid 47679
> > parent terminating
> > 
> > 
> > Client Logs
> > 
> > # iked -dvv
> > create_ike: using unknown for peer openbsd-server.example.com
> > ikev2 "OPENBSD-SERVER_INET4_NETS" active tunnel esp inet from 10.88.12.0/24 
> > to
> > 10.88.0.0/22 from 10.88.12.0/24 to 203.0.113.92 local any peer 203.0.113.92
> > ikesa enc aes-256-gcm-12 prf hmac-sha2-512 group ecp521 srcid
> > linux-client.example.com dstid openbsd-server.example.com lifetime 3600 
> > bytes
> > 1073741824 psk 0x746869732d69732d612d6c6f6e672d746573742d70772d39 tag
> > "$name-$id"
> > /etc/iked.conf: loaded 1 configuration rules
> > ca_privkey_serialize: type ECDSA length 121
> > ca_pubkey_serialize: type ECDSA length 91
> > config_getpolicy: received policy
> > config_getpfkey: received pfkey fd 3
> > ca_privkey_to_method: type ECDSA method ECDSA_256
> > ca_getkey: received private key type ECDSA length 121
> > ca_getkey: received public key type ECDSA length 91
> > ca_dispatch_parent: config reset
> > ca_reload: local cert type ECDSA
> > config_getocsp: ocsp_url none tolerate 0 maxage -1
> > ikev2_dispatch_cert: updated local CERTREQ type ECDSA length 0
> > config_getcompile: compilation done
> > config_getsocket: received socket fd 4
> > config_getsocket: received socket fd 5
> > config_getsocket: received socket fd 6
> > config_getsocket: received socket fd 7
> > config_getstatic: dpd_check_interval 60
> > config_getstatic: no enforcesingleikesa
> > config_getstatic: no fragmentation
> > config_getstatic: mobike
> > config_getstatic: nattport 4500
> > config_getstatic: no stickyaddress
> > ikev2_init_ike_sa: initiating "OPENBSD-SERVER_INET4_NETS"
> > ikev2_policy2id: srcid FQDN/linux-client.example.com length 27
> > ikev2_add_proposals: length 36
> > ikev2_next_payload: length 40 nextpayload KE
> > ikev2_next_payload: length 140 nextpayload NONCE
> > ikev2_next_payload: length 36 nextpayload VENDOR
> > ikev2_next_payload: length 16 nextpayload NOTIFY
> > ikev2_nat_detection: local source 0xb825bd62181aa707 0x0000000000000000
> > 0.0.0.0:500
> > ikev2_next_payload: length 28 nextpayload NOTIFY
> > ikev2_nat_detection: local destination 0xb825bd62181aa707 0x0000000000000000
> > 203.0.113.92:500
> > ikev2_next_payload: length 28 nextpayload NOTIFY
> > ikev2_next_payload: length 14 nextpayload NONE
> > ikev2_pld_parse: header ispi 0xb825bd62181aa707 rspi 0x0000000000000000
> > nextpayload SA version 0x20 exchange IKE_SA_INIT flags 0x08 msgid 0 length
> > 330 response 0
> > ikev2_pld_payloads: payload SA nextpayload KE critical 0x00 length 40
> > ikev2_pld_sa: more 0 reserved 0 length 36 proposal #1 protoid IKE spisize 0
> > xforms 3 spi 0
> > ikev2_pld_xform: more 3 reserved 0 length 12 type ENCR id AES_GCM_12
> > ikev2_pld_attr: attribute type KEY_LENGTH length 256 total 4
> > ikev2_pld_xform: more 3 reserved 0 length 8 type DH id ECP_521
> > ikev2_pld_xform: more 0 reserved 0 length 8 type PRF id HMAC_SHA2_512
> > ikev2_pld_payloads: payload KE nextpayload NONCE critical 0x00 length 140
> > ikev2_pld_ke: dh group ECP_521 reserved 0
> > ikev2_pld_payloads: payload NONCE nextpayload VENDOR critical 0x00 length 36
> > ikev2_pld_payloads: payload VENDOR nextpayload NOTIFY critical 0x00 length
> > 16
> > ikev2_pld_payloads: payload NOTIFY nextpayload NOTIFY critical 0x00 length
> > 28
> > ikev2_pld_notify: protoid NONE spisize 0 type NAT_DETECTION_SOURCE_IP
> > ikev2_pld_payloads: payload NOTIFY nextpayload NOTIFY critical 0x00 length
> > 28
> > ikev2_pld_notify: protoid NONE spisize 0 type NAT_DETECTION_DESTINATION_IP
> > ikev2_pld_payloads: payload NOTIFY nextpayload NONE critical 0x00 length 14
> > ikev2_pld_notify: protoid NONE spisize 0 type SIGNATURE_HASH_ALGORITHMS
> > spi=0xb825bd62181aa707: send IKE_SA_INIT req 0 peer 203.0.113.92:500 local
> > 0.0.0.0:500, 330 bytes
> > spi=0xb825bd62181aa707: sa_state: INIT -> SA_INIT
> > spi=0xb825bd62181aa707: recv IKE_SA_INIT res 0 peer 203.0.113.92:500 local
> > 172.20.10.7:500, 330 bytes, policy 'OPENBSD-SERVER_INET4_NETS'
> > ikev2_recv: ispi 0xb825bd62181aa707 rspi 0xe5481ced5de262ea
> > ikev2_recv: updated SA to peer 203.0.113.92:500 local 172.20.10.7:500
> > ikev2_policy2id: srcid FQDN/linux-client.example.com length 27
> > ikev2_pld_parse: header ispi 0xb825bd62181aa707 rspi 0xe5481ced5de262ea
> > nextpayload SA version 0x20 exchange IKE_SA_INIT flags 0x20 msgid 0 length
> > 330 response 1
> > ikev2_pld_payloads: payload SA nextpayload KE critical 0x00 length 40
> > ikev2_pld_sa: more 0 reserved 0 length 36 proposal #1 protoid IKE spisize 0
> > xforms 3 spi 0
> > ikev2_pld_xform: more 3 reserved 0 length 12 type ENCR id AES_GCM_12
> > ikev2_pld_attr: attribute type KEY_LENGTH length 256 total 4
> > ikev2_pld_xform: more 3 reserved 0 length 8 type PRF id HMAC_SHA2_512
> > ikev2_pld_xform: more 0 reserved 0 length 8 type DH id ECP_521
> > ikev2_pld_payloads: payload KE nextpayload NONCE critical 0x00 length 140
> > ikev2_pld_ke: dh group ECP_521 reserved 0
> > ikev2_pld_payloads: payload NONCE nextpayload VENDOR critical 0x00 length 36
> > ikev2_pld_payloads: payload VENDOR nextpayload NOTIFY critical 0x00 length
> > 16
> > ikev2_pld_payloads: payload NOTIFY nextpayload NOTIFY critical 0x00 length
> > 28
> > ikev2_pld_notify: protoid NONE spisize 0 type NAT_DETECTION_SOURCE_IP
> > ikev2_nat_detection: peer source 0xb825bd62181aa707 0xe5481ced5de262ea
> > 203.0.113.92:500
> > ikev2_pld_payloads: payload NOTIFY nextpayload NOTIFY critical 0x00 length
> > 28
> > ikev2_pld_notify: protoid NONE spisize 0 type NAT_DETECTION_DESTINATION_IP
> > ikev2_nat_detection: peer destination 0xb825bd62181aa707 0xe5481ced5de262ea
> > 172.20.10.7:500
> > ikev2_pld_notify: NAT_DETECTION_DESTINATION_IP detected NAT
> > ikev2_pld_payloads: payload NOTIFY nextpayload NONE critical 0x00 length 14
> > ikev2_pld_notify: protoid NONE spisize 0 type SIGNATURE_HASH_ALGORITHMS
> > ikev2_pld_notify: signature hash SHA2_256 (2)
> > ikev2_pld_notify: signature hash SHA2_384 (3)
> > ikev2_pld_notify: signature hash SHA2_512 (4)
> > ikev2_enable_natt: detected NAT, enabling UDP encapsulation, updated SA to
> > peer 203.0.113.92:4500 local 172.20.10.7:4500
> > proposals_negotiate: score 3
> > sa_stateok: SA_INIT flags 0x0000, require 0x0008 auth
> > spi=0xb825bd62181aa707: ikev2_sa_keys: DHSECRET with 66 bytes
> > ikev2_sa_keys: SKEYSEED with 64 bytes
> > spi=0xb825bd62181aa707: ikev2_sa_keys: S with 80 bytes
> > ikev2_prfplus: T1 with 64 bytes
> > ikev2_prfplus: T2 with 64 bytes
> > ikev2_prfplus: T3 with 64 bytes
> > ikev2_prfplus: T4 with 64 bytes
> > ikev2_prfplus: T5 with 64 bytes
> > ikev2_prfplus: Tn with 320 bytes
> > ikev2_sa_keys: SK_d with 64 bytes
> > ikev2_sa_keys: SK_ei with 36 bytes
> > ikev2_sa_keys: SK_er with 36 bytes
> > ikev2_sa_keys: SK_pi with 64 bytes
> > ikev2_sa_keys: SK_pr with 64 bytes
> > ikev2_msg_auth: initiator auth data length 426
> > sa_stateok: SA_INIT flags 0x0008, require 0x0008 auth
> > ikev2_policy2id: dstid FQDN/openbsd-server.example.com length 23
> > ikev2_next_payload: length 31 nextpayload IDr
> > ikev2_next_payload: length 27 nextpayload AUTH
> > spi=0xb825bd62181aa707: ikev2_cp_request_configured: no
> > ikev2_next_payload: length 72 nextpayload SA
> > ikev2_add_proposals: length 0
> > ikev2_next_payload: length 4 nextpayload TSi
> > ikev2_next_payload: length 24 nextpayload TSr
> > ikev2_next_payload: length 40 nextpayload NONE
> > ikev2_next_payload: length 223 nextpayload IDi
> > ikev2_msg_encrypt: decrypted length 198
> > ikev2_msg_encrypt: padded length 199
> > ikev2_msg_encrypt: length 199, padding 0, output length 219
> > ikev2_msg_integr: message length 251
> > ikev2_msg_integr: integrity checksum length 12
> > ikev2_pld_parse: header ispi 0xb825bd62181aa707 rspi 0xe5481ced5de262ea
> > nextpayload SK version 0x20 exchange IKE_AUTH flags 0x08 msgid 1 length 251
> > response 0
> > ikev2_pld_payloads: payload SK nextpayload IDi critical 0x00 length 223
> > ikev2_msg_decrypt: IV length 8
> > ikev2_msg_decrypt: encrypted payload length 199
> > ikev2_msg_decrypt: integrity checksum length 12
> > ikev2_msg_decrypt: AAD length 32
> > ikev2_msg_decrypt: decrypted payload length 199/199 padding 0
> > ikev2_pld_payloads: decrypted payload IDi nextpayload IDr critical 0x00
> > length 31
> > ikev2_pld_id: id FQDN/linux-client.example.com length 27
> > ikev2_pld_payloads: decrypted payload IDr nextpayload AUTH critical 0x00
> > length 27
> > ikev2_pld_id: id FQDN/openbsd-server.example.com length 23
> > ikev2_pld_payloads: decrypted payload AUTH nextpayload SA critical 0x00
> > length 72
> > ikev2_pld_auth: method SHARED_KEY_MIC length 64
> > ikev2_pld_payloads: decrypted payload SA nextpayload TSi critical 0x00
> > length 4
> > ikev2_validate_sa: malformed payload: too short for header (0 < 8)
> > ikev2_pld_payloads: decrypted payload TSi nextpayload TSr critical 0x00
> > length 24
> > ikev2_pld_tss: count 1 length 16
> > ikev2_pld_tss: type IPV4_ADDR_RANGE protoid 0 length 16 startport 0 endport
> > 65535
> > ikev2_pld_ts: start 10.88.12.0 end 10.88.12.255
> > ikev2_pld_payloads: decrypted payload TSr nextpayload NONE critical 0x00
> > length 40
> > ikev2_pld_tss: count 2 length 32
> > ikev2_pld_tss: type IPV4_ADDR_RANGE protoid 0 length 16 startport 0 endport
> > 65535
> > ikev2_pld_ts: start 10.88.0.0 end 10.88.3.255
> > ikev2_pld_tss: type IPV4_ADDR_RANGE protoid 0 length 16 startport 0 endport
> > 65535
> > ikev2_pld_ts: start 203.0.113.92 end 203.0.113.92
> > spi=0xb825bd62181aa707: send IKE_AUTH req 1 peer 203.0.113.92:4500 local
> > 172.20.10.7:4500, 251 bytes, NAT-T
> > config_free_proposals: free 0x1cfd618
> > spi=0xb825bd62181aa707: retransmit 1 IKE_AUTH req 1 peer 203.0.113.92:4500
> > local 172.20.10.7:4500
> > ^Cconfig_doreset: flushing policies
> > config_doreset: flushing SAs
> > config_free_proposals: free 0x1cf8e10
> > config_free_proposals: free 0x1ca5678
> > config_free_flows: free 0x1ca29b8
> > config_free_flows: free 0x1ca2ba8
> > ca exiting, pid 3414
> > config_doreset: flushing users
> > control exiting, pid 3415
> > ikev2 exiting, pid 3416
> > parent terminating
> > 
> 

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