sctp_plpmtud_ipv4_udp_1500_optbinary_1500.pkt

--tolerance_usecs=100000
--ip_version=ipv4
--mtu=1500
--udp_encapsulation="sctp"

 0.0 `sysctl -i net.inet.sctp.initial_cwnd=10`
 0.0 `sysctl -i net.inet.sctp.plpmtud_enable=1`
 0.0 `sysctl -i net.inet.sctp.plpmtud_search_algorithm=2` // OptBinary
 0.0 `sysctl -i net.inet.sctp.udp_tunneling_port=9899`
 0.0 `sysctl -i net.inet.tcp.hostcache.purgenow=1`

// Create a non-blocking 1-to-1 style socket
+0.0 socket(..., SOCK_STREAM, IPPROTO_SCTP) = 3
+0.0 fcntl(3, F_SETFL, O_RDWR | O_NONBLOCK) = 0
// set remote port for UDP encapsulation
//+0.0 setsockopt(3, IPPROTO_SCTP, SCTP_REMOTE_UDP_ENCAPS_PORT, {sue_assoc_id=..., sue_address={sa_family=AF_INET, sin_port=htons(8080), sin_addr=inet_addr("192.0.2.1")}, sue_port=htons(5001)}, ...) = 0
+0.0 connect(3, ..., ...) = -1 EINPROGRESS (Operation now in progress)

// Trigger the active associtation setup
+0.0 > sctp: INIT[flgs=0, tag=1, a_rwnd=..., os=..., is=..., tsn=1, ...]
+0.1 < sctp/udp(9899>9899): INIT_ACK[flgs=0, tag=2, a_rwnd=99999, os=1, is=1, tsn=1, STATE_COOKIE[len=4, val=...]]
+0.0 > sctp/udp(9899>9899): COOKIE_ECHO[flgs=0, len=..., val=...]
+0.1 < sctp/udp(9899>9899): COOKIE_ACK[flgs=0]

// Check if the setup was sucessful
+0.0 getsockopt(3, SOL_SOCKET, SO_ERROR, [0], [4]) = 0

// probe for 1200
+0.0 > sctp/udp(9899>9899): HEARTBEAT[flgs=0, HEARTBEAT_INFORMATION[len=..., val=...]];
             PAD[flgs=0, len=1112, val=...]
+0.1 < sctp/udp(9899>9899): HEARTBEAT_ACK[flgs=0, HEARTBEAT_INFORMATION[len=..., val=...]]

// probe for 1500
+0.0 > sctp/udp(9899>9899): HEARTBEAT[flgs=0, HEARTBEAT_INFORMATION[len=..., val=...]];
             PAD[flgs=0, len=1412, val=...]
+0.1 < sctp/udp(9899>9899): HEARTBEAT_ACK[flgs=0, HEARTBEAT_INFORMATION[len=..., val=...]]

+2.0 close(3) = 0
//Shutdown
+0.0 > sctp/udp(9899>9899): SHUTDOWN[flgs=0, cum_tsn=0]
+0.0 < sctp/udp(9899>9899): SHUTDOWN_ACK[flgs=0]
+0.0 > sctp/udp(9899>9899): SHUTDOWN_COMPLETE[flgs=...]