TCPDUMP

sun# tcpdump -i eth0 not port ssh and not port domain > /tmp/tcpdump.log 2>&1 &

PRE-TEST

moon# echo 1 > /proc/sys/net/ipv4/ip_forward

sun# echo 1 > /proc/sys/net/ipv4/ip_forward

moon# ipsec start
Starting strongSwan 4.6.1 IPsec [starter]...
No leaks detected, 5 suppressed by whitelist

sun# ipsec start
Starting strongSwan 4.6.1 IPsec [starter]...
No leaks detected, 5 suppressed by whitelist

moon# sleep 2 

moon# ipsec up net-net
002 "net-net" #1: initiating Main Mode
102 "net-net" #1: STATE_MAIN_I1: initiate
003 "net-net" #1: received Vendor ID payload [strongSwan]
003 "net-net" #1: received Vendor ID payload [XAUTH]
003 "net-net" #1: received Vendor ID payload [Dead Peer Detection]
104 "net-net" #1: STATE_MAIN_I2: sent MI2, expecting MR2
002 "net-net" #1: we have a cert and are sending it upon request
106 "net-net" #1: STATE_MAIN_I3: sent MI3, expecting MR3
002 "net-net" #1: Peer ID is ID_FQDN: 'sun.strongswan.org'
002 "net-net" #1: crl not found
002 "net-net" #1: certificate status unknown
002 "net-net" #1: ISAKMP SA established
004 "net-net" #1: STATE_MAIN_I4: ISAKMP SA established
002 "net-net" #2: initiating Quick Mode PUBKEY+ENCRYPT+TUNNEL+PFS+UP {using isakmp#1}
110 "net-net" #2: STATE_QUICK_I1: initiate
002 "net-net" #2: sent QI2, IPsec SA established {ESP=>0xc8fe262f <0xc7ed8952}
004 "net-net" #2: STATE_QUICK_I2: sent QI2, IPsec SA established {ESP=>0xc8fe262f <0xc7ed8952}

moon# sleep 2 


TEST

moon# ipsec status | grep 'net-net.*STATE_QUICK_I2.*IPsec SA established' [YES]
000 #2: "net-net" STATE_QUICK_I2 (sent QI2, IPsec SA established); EVENT_SA_REPLACE in 947s; newest IPSEC; eroute owner

sun# ipsec status | grep 'net.net.*STATE_QUICK_R2.*IPsec SA established' [YES]
000 #2: "net-net" STATE_QUICK_R2 (IPsec SA established); EVENT_SA_REPLACE in 1108s; newest IPSEC; eroute owner

alice# ping -c 1 10.2.0.10 | grep '64 bytes from 10.2.0.10: icmp_seq=1' [YES]
64 bytes from 10.2.0.10: icmp_seq=1 ttl=62 time=1.32 ms

sun# killall tcpdump

sun# cat /tmp/tcpdump.log | grep 'IP6 ip6-moon.strongswan.org > ip6-sun.strongswan.org: ESP' [YES]
03:01:19.679321 IP6 ip6-moon.strongswan.org > ip6-sun.strongswan.org: ESP(spi=0xc8fe262f,seq=0x1), length 132

sun# cat /tmp/tcpdump.log | grep 'IP6 ip6-sun.strongswan.org > ip6-moon.strongswan.org: ESP' [YES]
03:01:19.679778 IP6 ip6-sun.strongswan.org > ip6-moon.strongswan.org: ESP(spi=0xc7ed8952,seq=0x1), length 132


POST-TEST

moon# ipsec stop
Stopping strongSwan IPsec...

sun# ipsec stop
Stopping strongSwan IPsec...