alice::ipsec status 2> /dev/null::nat-t.*ESTABLISHED.*alice@strongswan.org.*sun.strongswan.org::YES venus::ipsec status 2> /dev/null::nat-t.*ESTABLISHED.*venus.strongswan.org.*sun.strongswan.org::YES sun:: ipsec status 2> /dev/null::nat-t\[1]: ESTABLISHED.*sun.strongswan.org.*alice@strongswan.org::YES sun:: ipsec status 2> /dev/null::nat-t\[2]: ESTABLISHED.*sun.strongswan.org.*venus.strongswan.org::YES alice::ipsec status 2> /dev/null::nat-t.*INSTALLED, TUNNEL.*ESP in UDP::YES venus::ipsec status 2> /dev/null::nat-t.*INSTALLED, TUNNEL.*ESP in UDP::YES sun:: ipsec status 2> /dev/null::nat-t[{]1}.*INSTALLED, TUNNEL.*ESP in UDP::YES sun:: ipsec status 2> /dev/null::nat-t[{]2}.*INSTALLED, TUNNEL.*ESP in UDP::YES alice::ping -c 1 PH_IP_BOB::64 bytes from PH_IP_BOB: icmp_.eq=1::YES venus::ping -c 1 PH_IP_BOB::64 bytes from PH_IP_BOB: icmp_.eq=1::YES moon:: sleep 6::no output expected::NO bob:: ping -c 1 PH_IP_ALICE::64 bytes from PH_IP_ALICE: icmp_.eq=1::YES bob:: ping -c 1 PH_IP_VENUS::64 bytes from PH_IP_VENUS: icmp_.eq=1::YES moon::tcpdump::IP moon.strongswan.org.* > sun.strongswan.org.\(4500\|ipsec-nat-t\): UDP-encap: ESP::YES moon::tcpdump::IP sun.strongswan.org.\(4500\|ipsec-nat-t\) > moon.strongswan.org.*: UDP-encap: ESP::YES moon::tcpdump::IP moon.strongswan.org.* > sun.strongswan.org.\(4500\|ipsec-nat-t\): isakmp-nat-keep-alive::YES alice::cat /var/log/daemon.log::sending keep alive::YES venus::cat /var/log/daemon.log::sending keep alive::YES