Selinux in FC4 is blocking SCTP
type=AVC msg=audit(1128050967.120:12221195): avc: denied { name_bind
} for pid=10749 comm="sctp_test" src=1234
scontext=root:system_r:unconfined_t tcontext=system_u:object_r:port_t
tclass=socket
type=SYSCALL msg=audit(1128050967.120:12221195): arch=40000003
syscall=102 success=no exit=-13 a0=2 a1=bfc003f0 a2=2 a3=1 items=0
pid=10749 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0
fsgid=0 comm="sctp_test" exe="/usr/bin/sctp_test"
type=AVC msg=audit(1128050975.796:12243576): avc: denied { name_bind
} for pid=10752 comm="sctp_test" src=1234
scontext=root:system_r:unconfined_t tcontext=system_u:object_r:port_t
tclass=socket
type=AVC msg=audit(1128050975.796:12243576): avc: denied { 0x400000
} for pid=10752 comm="sctp_test" saddr=192.168.16.64 src=1234
scontext=root:system_r:unconfined_t tcontext=system_u:object_r:node_t
tclass=socket
type=SYSCALL msg=audit(1128050975.796:12243576): arch=40000003
syscall=102 success=yes exit=0 a0=2 a1=bfd283d0 a2=2 a3=1 items=0
pid=10752 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0
fsgid=0 comm="sctp_test" exe="/usr/bin/sctp_test"