r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
r1 = dup(r0)
r2 = signalfd(0xffffffffffffffff, &(0x7f0000000140), 0x8)
r3 = dup2(r0, r2)
setsockopt$sock_int(r3, 0x1, 0x2, &(0x7f0000000080)=0x80000001, 0x4)
listen(r1, 0x0)