I am encountering this problem which seems to have been around for a while ->
///// root@TroposRouter:/etc# ipsec up test initiating IKE_SA test[4] to 192.168.55.1 generating IKE_SA_INIT request 0 [ SA KE No N(NATD_S_IP) N(NATD_D_IP) ] sending packet: from 192.168.55.6[500] to 192.168.55.1[500] received packet: from 192.168.55.1[500] to 192.168.55.6[500] parsed IKE_SA_INIT response 0 [ SA KE No V V V N(NATD_S_IP) N(NATD_D_IP) CERTREQ N(HTTP_CERT_LOOK) N((16430)) V ] received unknown vendor ID: 43:49:53:43:4f:2d:44:45:4c:45:54:45:2d:52:45:41:53:4f:4e received unknown vendor ID: 43:49:53:43:4f:56:50:4e:2d:52:45:56:2d:30:32 received unknown vendor ID: 46:4c:45:58:56:50:4e:2d:53:55:50:50:4f:52:54:45:44 received unknown vendor ID: 40:48:b7:d5:6e:bc:e8:85:25:e7:de:7f:00:d6:c2:d3 cert payload ANY not supported - ignored no IDi configured, fall back on IP address authentication of '192.168.55.6' (myself) with pre-shared key establishing CHILD_SA test unable to allocate SPIs from kernel root@TroposRouter:/etc# ///// ipsec statusall looks like -> establishing CHILD_SA test unable to allocate SPIs from kernel root@TroposRouter:/etc# ipsec statusall Status of IKE charon daemon (strongSwan 5.0.0, Linux 3.3.8, mips): uptime: 7 seconds, since Jan 01 01:14:28 2017 malloc: sbrk 184320, mmap 0, used 153152, free 31168 worker threads: 3 of 16 idle, 12/1/0/0 working, job queue: 0/0/0/0, scheduled: 0 loaded plugins: charon test-vectors curl ldap mysql sqlite pkcs11 aes des blowfish sha1 sha2 md4 md5 random nonce x509 revocation constraints pubkey pkcs1 pkcs8 pgp dnskey pem openssl gcrypt fips-prf gmp agent xcbc cmac hmac ctr ccm gcm attr kernel-netlink resolve socket-default farp stroke smp updown eap-identity eap-md5 eap-mschapv2 xauth-generic xauth-eap dhcp whitelist led duplicheck uci addrblock Listening IP addresses: 192.168.55.6 192.168.164.166 192.168.55.9 192.168.167.166 192.168.55.8 192.168.166.166 192.168.168.168 192.168.169.166 192.168.55.7 192.168.165.166 Connections: test: %any...192.168.55.1 IKEv2 test: local: [%any] uses pre-shared key authentication test: remote: [192.168.55.1] uses pre-shared key authentication test: child: dynamic === dynamic TUNNEL Security Associations (0 up, 0 connecting): none root@TroposRouter:/etc# This is all on a mips based openwrt derived platform. Thoughts? Regards, Dorn