Basic pluto test with west has auto=route and klips stack.

Despite being packet triggered, and this having a shunt, we still leak
plaintext. This is wrong!

15:28:53.576145 IP 192.1.2.45.500 > 192.1.2.23.500: isakmp: phase 1 I ident
15:28:53.653041 IP 192.1.2.23.500 > 192.1.2.45.500: isakmp: phase 1 R ident
15:28:53.738404 IP 192.1.2.45.500 > 192.1.2.23.500: isakmp: phase 1 I ident
15:28:53.843311 IP 192.1.2.23.500 > 192.1.2.45.500: isakmp: phase 1 R ident
15:28:54.033087 IP 192.1.2.45.500 > 192.1.2.23.500: isakmp: phase 1 I ident[E]
15:28:54.206388 IP 192.1.2.23.500 > 192.1.2.45.500: isakmp: phase 1 R ident[E]
15:28:54.404374 IP 192.1.2.45.500 > 192.1.2.23.500: isakmp: phase 2/others I oakley-quick[E]
15:28:54.856267 IP 192.1.2.23.500 > 192.1.2.45.500: isakmp: phase 2/others R oakley-quick[E]
15:28:55.241907 IP 192.1.2.45 > 192.1.2.23: ESP(spi=0xeed38e8f,seq=0x1), length 132
15:28:55.242189 IP 192.0.2.254 > 192.0.1.254: ICMP echo reply, id 1463, seq 2, length 64
15:28:55.270730 IP 192.1.2.45.500 > 192.1.2.23.500: isakmp: phase 2/others I oakley-quick[E]
15:28:55.298441 IP 192.1.2.45 > 192.1.2.23: ESP(spi=0xeed38e8f,seq=0x2), length 132
15:28:55.298600 IP 192.0.2.254 > 192.0.1.254: ICMP echo reply, id 1463, seq 3, length 64
15:28:56.300059 IP 192.1.2.45 > 192.1.2.23: ESP(spi=0xeed38e8f,seq=0x3), length 132
15:28:56.300418 IP 192.1.2.23 > 192.1.2.45: ESP(spi=0x45aeeecb,seq=0x1), length 132

